<div>
<br><a href="https://filedb.experts-exchange.com/incoming/2021/07_w29/1566297/Screen-Shot-2021-07-11-at-4.42.42-PM.png" rel="ugc">Screen Shot 2021-07-11 at 4.42.42 PM.png</a><br><a href="https://filedb.experts-exchange.com/incoming/2021/07_w29/1566297/Screen-Shot-2021-07-11-at-4.42.42-PM.png" rel="ugc"></a><a href="https://filedb.experts-exchange.com/incoming/2021/07_w29/1566299/Screen-Shot-2021-07-11-at-4.42.42-PM.png" rel="ugc">Screen Shot 2021-07-11 at 4.42.42 PM.png</a>
</div>


Screen-Shot-2021-07-11-at-4.40.30-PM.png

Screen-Shot-2021-07-11-at-4.42.42-PM.png

<div>
if you have iptables or firewalld as the linux firewall, make sure to allow port 25 through.<br />
<br />
lets try this, you are using mailhop to filter the message, but then you want the message delivered to the centos box with postfix you are building?<br />
is that correct?<br />
<br />
postconf <br />
to view the current postfix config. <br />
<a href="https://linuxize.com/post/install-and-configure-postfix-and-dovecot/" rel="ugc">https://linuxize.com/post/install-and-configure-postfix-and-dovecot/</a><br />
<br />
do you want the user base to be managed through a DB?<br />
the firewall ports for 25, 465,587,993,995 might neeed to be opened on the linux firewall to allow SMTP, SSL SMTP 465, STARTTLS SMTP 587,IMAP SSL 993 and POP3 SSL 995 open.<br />
<br />
the SMTP deal with receiving an email from other servers, 465 and 587 are for users to send their outgoing messages through your server. 993 and 995 is to access the emails received on the server.
</div>


<div>
I am using Redhat 8.3 and just the simplest user based email would be fine. Email can be put in the /var/mail/{user} dovecot can be used to get them, that would be ok with me. I have tried a DB approach but I ran in to some problems. I stopped. What would you like to know. I am trying to follow this approach: <a href="https://www.linuxbabe.com/redhat/run-your-own-email-server-centos-postfix-smtp-server" rel="ugc">https://www.linuxbabe.com/redhat/run-your-own-email-server-centos-postfix-smtp-server</a> and&nbsp;<a href="https://www.linuxbabe.com/redhat/install-dovecot-centos-enable-tls-encryption" rel="ugc">https://www.linuxbabe.com/redhat/install-dovecot-centos-enable-tls-encryption</a>. port 25 is open and below has been done. both websites were followed<br><pre><code class="code-1 nolinks" id="code-20-43313832-1"><span>sudo firewall-cmd --permanent --add-service={http,https,smtp-submission,smtps,imap,imaps,pop3,pop3s}</span>
</code></pre><br><br>
</div>


<div>
Postfix -- like all the other MTAs -- is a pleasure when running right and a snarling monster when it is not.<br />
<br />
Try raising the debug level one level at a time until you see the information in the postfix log that reveals the issue. &nbsp;Don't raise it any more than one level at a time because postfix generates extremely, extremely verbose logs when debugging is fully enabled.<br />
<br />
This also means it will be helpful to restrict incoming emails while troubleshooting, otherwise the log will be full of different processes all trying to dump debugging information all at once. &nbsp;I found it helpful to restrict debugging to emails from a specific domain instead of all incoming.<br />
<br />
From main.cf:<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-43314011-1"><span># ========== DEBUGGING CONTROL ==========</span>
<span># How much to bump the logging level when a host matches debug_peer_list</span>
<span>debug_peer_level = 2</span>
<span># List of domain, names or addresses to debug</span>
<span>debug_peer_list=testdomain.com,othertestdomain.com</span>
</code></pre>
</div>


Fractional CTO

David Favor

<div>
please post the output of postconf<br />
<br />
much of your configuration is absent. I have followed instructions to setup things, and as is common, one always thinks they know and inevitably skip a step. Wouldn't you know it, the step they skipped is the one that sets the application to listen on all interfaces and not just localhost.<br />
Or forgot to add the domain instead of somehost.domain.com as the base of the email addresses.
</div>


Principal Software Engineer

Dr. Klahn

<div>
having seen, why are you limiting mynetwork to single hosts?<br />
mynetworks = 127.0.0.1/32 10.0.1.4/32 192.168.122.1/32<br />
<br />
How are you defining and managing the mailboxes, are you using /etc/passwd users as the destination mailboxes? <br />
<br />
Several of the errors point to dovecot-lmtp as the issue, can you confirm
</div>


<div>
Seems like this question is now covering multiple topics.<br />
<br />
Answering the first, to trace the entire life of a single message in Postfix.<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-43314429-1"><span>grep 7CDB440E59DC /path-to-postfix-logs</span>
</code></pre>
<br />
Where 7CDB440E59DC is a unique Message-ID.
</div>


<div>
I have tried to trace a test email and dump Postconf.<br>Here is the output<br><a href="https://filedb.experts-exchange.com/incoming/2021/07_w29/1566473/postconf-dump.txt" rel="ugc nofollow">postconf-dump.txt</a><br><a href="https://filedb.experts-exchange.com/incoming/2021/07_w29/1566474/E6BF140E59D.txt" rel="ugc">E6BF140E59D.txt</a>
</div>


E6BF140E59D.txt

<div>
Arnold, <br>I wishes to use the easiest to configure email client no DB is needed. If the DB would be easier then that is fine. I hope that you can log at the logs and tell me what to do.<br><br>I have port 25 opened and it seems that postfix is listening:<br><br>[root@mail postfix]# telnet thesheppards.name 25<br>Trying 216.118.150.90...<br>Connected to thesheppards.name.<br>Escape character is '^]'.<br>220 mail.thesheppards.name ESMTP Postfix<br>quit<br>221 2.0.0 Bye<br>Connection closed by foreign host.
</div>


<div>
Arnold &amp; David,<br>mynetworks = 127.0.0.1/32 10.0.1.4/32 192.168.122.1/32<br>I wish to be access any network to use the email server. I am a newbie with respect to this. I did manage to configure sendmail on another computer to receive email and have dovecot to retrieve them but could not send email out on another Redhat machine. The old computer ran RHEL 5.2 but is no longer in use. I am hoping to get my new email server up and running. I hope you can help with this task. Please send me any other directions.<br>Brian
</div>


<div>
commonly,depending on your situation, the lan IPs are granted relay rights, this is what mynetwork authorizes.<br />
/32 is a single host<br />
the IP/mask <br />
<br />
/24 &nbsp;255.255.255.0<br />
/16 255.255.0.0<br />
/8 255.0.0.0.<br />
<br />
<a href="https://docs.netgate.com/pfsense/en/latest/network/cidr.html" rel="ugc">https://docs.netgate.com/pfsense/en/latest/network/cidr.html</a><br />
<br />
Your dovcot might not be the part that is complete. I.e. postfix accepts the message and passes it to dovecot as the local delivery agent.<br />
Did you complete this process on the TLS dovecot setup?<br />
Second link heading &quot;Using Dovecot to Deliver Email to Message Store&quot;<br />
<br />
Where did you setup dovecot to store the messages for each user?<br />
postfix is passing the dovecot-lmtp<br />
per this setting<br />
mailbox_transport = lmtp:unix:private/dovecot-<wbr />lmtp<br />
Did you setup the service for dovecot-lmtp to start and listen in this section?<br />
Deals with configuring dovecot to where the message store is either /var/mail or another location /home/username/Maildir<br />
and the service configuration that will be accepting the messages from postfix for final delivery/storage?
</div>


<div>
You mentioned, &quot;I am hoping to get my new email server up and running.&quot;<br />
<br />
Start with Ubuntu Focal (uses a more recent Kernel than CentOS) + OpenSMTPD or Postfix or EXIM.<br />
<br />
Trying to get sendmail setup + maintain it... requires far more time than OpenSMTPD or Postfix or EXIM.
</div>


<div>
You asked, <b>&quot;How do I trace email&quot;</b> which is the same for any MTA.<br />
<br />
1) Increase logging verbosity so entire message life, related to a Message-ID, emits into logs.<br />
<br />
2) Choose 1x message to trace, usually by some envelop header pair... like From: + To:... which gives you the related message's Message-ID.<br />
<br />
3) Then grep your MTA log files for the Message-ID determined by step #2.<br />
<br />
This is... MTA independent... Makes no difference what MTA you're running, the exact same procedure is used.
</div>


<div>
Arnold,<br>How to I open the my networks to address other than local computers. <br>Brian
</div>


<div>
mynetworks_style = class<br>mynetworks = 169.100.189.0/28, 127.0.0.0/8, 10.0.1.0/24 <br>All this work
</div>


<div>
Arnold<br>I can not get postfix to send any new massages for me to trace to. Can you give any direction on what question I should ask to stop this thread and start an other. I am trying to get a fresh start. please advise me. I have sent new email to my domain and they are not showing as. a bounce etc. ??<br>Brian&nbsp;
</div>


<div>
When you say, me, do you mean on the server or an email external to this server?<br />
<br />
You can do two things, one, remove dovecot as postfix's local delivery agent.<br />
Postfix should handle the local delivery. See what happens<br />
<br />
To inject a message into postfix<br />
<br />
Try this<br />
echo &quot;To: recipient_email_address<br />
From: sender_email_addrees<br />
Subject: testing subject <br />
<br />
This is a test &quot;| /usr/sbin/sendmail -oi -fsender_email_address -t<br />
<br />
<br />
Sendmail is the backwards compatible placeholder that points to the local MTA.<br />
<br />
look at /car/log/maillog to see what happened to the message.
</div>


<div>
You appear to have debugging setup.<br />
<br />
1) Stop Postfix.<br />
<br />
2) Remove all Postfix logs.<br />
<br />
3) Start Postfix.<br />
<br />
4) Send a message per @arnold's comment.<br />
<br />
5) Attach the following data.<br />
<br />
a) Complete output of the mail injection (sendmail command).<br />
<br />
b) A zipfile containing all Postfix log files.<br />
<br />
c) Also check your system logs... likely /var/log/messages on RedHat... for any oddball messages... then attach these if you find any...
</div>


<div>
It will not send email or generate any maillog files?<br>Brian
</div>


<div>
[root@mail log]# systemctl status postfix.service<br>● postfix.service - Postfix Mail Transport Agent<br>&nbsp; &nbsp;Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor preset: disabled)<br>&nbsp; Drop-In: /etc/systemd/system/postfix.service.d<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;└─restart.conf<br>&nbsp; &nbsp;Active: active (running) since Sat 2021-07-17 16:23:06 ADT; 17min ago<br>&nbsp; Process: 164439 ExecStop=/usr/sbin/postfix stop (code=exited, status=0/SUCCESS)<br>&nbsp; Process: 164471 ExecStart=/usr/sbin/postfix start (code=exited, status=0/SUCCESS)<br>&nbsp; Process: 164469 ExecStartPre=/usr/libexec/postfix/chroot-update (code=exited, status=0/SUCCESS)<br>&nbsp; Process: 164466 ExecStartPre=/usr/libexec/postfix/aliasesdb (code=exited, status=0/SUCCESS)<br>&nbsp;Main PID: 164539 (master)<br>&nbsp; &nbsp; Tasks: 4 (limit: 99996)<br>&nbsp; &nbsp;Memory: 5.8M<br>&nbsp; &nbsp;CGroup: /system.slice/postfix.service<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;├─164539 /usr/libexec/postfix/master -w<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;├─164540 pickup -l -t unix -u<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;├─164541 qmgr -l -t unix -u<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;└─164553 tlsmgr -l -t unix -u<br><br>Jul 17 16:23:14 mail.thesheppards.name postfix/qmgr[164541]: 59FA540E59DE: removed<br>Jul 17 16:23:14 mail.thesheppards.name postfix/lmtp[164545]: D683F40E5AAC: to=&lt;brian@thesheppards.name&gt;, relay=none, delay=0.02, delays=0.02/0/0/0, dsn=4.4.1, status=deferred (connect to mail.thesheppards.name[private/dovecot-lmtp]: Connection refused)<br>Jul 17 16:28:06 mail.thesheppards.name postfix/qmgr[164541]: 473A740E5AA9: from=&lt;&gt;, size=2900, nrcpt=1 (queue active)<br>Jul 17 16:28:06 mail.thesheppards.name postfix/lmtp[164609]: 473A740E5AA9: to=&lt;brian@thesheppards.name&gt;, relay=none, delay=592, delays=592/0.01/0.01/0, dsn=4.4.1, status=deferred (connect to mail.thesheppards.name[private/dovecot-lmtp]: Connection refused)<br>Jul 17 16:33:06 mail.thesheppards.name postfix/qmgr[164541]: D683F40E5AAC: from=&lt;&gt;, size=2797, nrcpt=1 (queue active)<br>Jul 17 16:33:06 mail.thesheppards.name postfix/lmtp[164655]: D683F40E5AAC: to=&lt;brian@thesheppards.name&gt;, relay=none, delay=591, delays=591/0.02/0.01/0, dsn=4.4.1, status=deferred (connect to mail.thesheppards.name[private/dovecot-lmtp]: Connection refused)<br>Jul 17 16:38:06 mail.thesheppards.name postfix/qmgr[164541]: D6CF540E59DF: from=&lt;msprvs1=18831PVFBuTg1=bounces-266693-57@e.crave.ca&gt;, size=40919, nrcpt=1 (queue active)<br>Jul 17 16:38:06 mail.thesheppards.name postfix/qmgr[164541]: 473A740E5AA9: from=&lt;&gt;, size=2900, nrcpt=1 (queue active)<br>Jul 17 16:38:06 mail.thesheppards.name postfix/lmtp[164707]: D6CF540E59DF: to=&lt;brian@thesheppards.name&gt;, relay=none, delay=88631, delays=88630/0.01/0.01/0, dsn=4.4.1, status=deferred (connect to mail.thesheppards.name[private/dovecot-lmtp]: Connection refused)<br>Jul 17 16:38:06 mail.thesheppards.name postfix/lmtp[164708]: 473A740E5AA9: to=&lt;brian@thesheppards.name&gt;, relay=none, delay=1192, delays=1192/0.01/0.01/0, dsn=4.4.1, status=deferred (connect to mail.thesheppards.name[private/dovecot-lmtp]: Connection refused)<br>[root@mail log]#<br><br>======<br><br>[root@mail log]# systemctl status dovecot.service<br>● dovecot.service - Dovecot IMAP/POP3 email server<br>&nbsp; &nbsp;Loaded: loaded (/usr/lib/systemd/system/dovecot.service; enabled; vendor preset: disabled)<br>&nbsp; &nbsp;Active: failed (Result: exit-code) since Sat 2021-07-17 01:34:08 ADT; 15h ago<br>&nbsp; &nbsp; &nbsp;Docs: man:dovecot(1)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;http://wiki2.dovecot.org/<br>&nbsp; Process: 152077 ExecStart=/usr/sbin/dovecot -F (code=exited, status=89)<br>&nbsp; Process: 152070 ExecStartPre=/usr/libexec/dovecot/prestartscript (code=exited, status=0/SUCCESS)<br>&nbsp;Main PID: 152077 (code=exited, status=89)<br><br>Jul 17 01:34:08 mail.thesheppards.name systemd[1]: Starting Dovecot IMAP/POP3 email server...<br>Jul 17 01:34:08 mail.thesheppards.name systemd[1]: Started Dovecot IMAP/POP3 email server.<br>Jul 17 01:34:08 mail.thesheppards.name dovecot[152077]: doveconf: Fatal: Error in configuration file /etc/dovecot/conf.d/90-acl.conf line 11: Unknown setting: namespace { plugin { plugin<br>Jul 17 01:34:08 mail.thesheppards.name dovecot[152077]: doveconf: Error: managesieve-login: dump-capability process returned 89<br>Jul 17 01:34:08 mail.thesheppards.name dovecot[152077]: doveconf: Fatal: Error in configuration file /etc/dovecot/conf.d/90-acl.conf line 11: Unknown setting: namespace { plugin { plugin<br>Jul 17 01:34:08 mail.thesheppards.name systemd[1]: dovecot.service: Main process exited, code=exited, status=89/n/a<br>Jul 17 01:34:08 mail.thesheppards.name systemd[1]: dovecot.service: Failed with result 'exit-code'.<br>[root@mail log]#<br><br><br>
</div>


<div>
Please separate the postfix configuration from the Dovecot setup.<br />
<br />

<blockquote>
Jul 17 16:38:06 mail.thesheppards.name postfix/lmtp[164707]: D6CF540E59DF: to=&lt;brian@thesheppards.nam<wbr />e&gt;, relay=none, delay=88631, delays=88630/0.01/0.01/0, dsn=4.4.1, status=deferred (connect to mail.thesheppards.name[pri<wbr />vate/dovec<wbr />ot-lmtp]: Connection refused)
</blockquote>
<br />
try these two settings,<br />
#confirm the location either it should be /var/spool/mail or /var/mail. Eliminate dovecot from the mail server setup equation. At this point it is the one having an issue.<br />
home_mailbox=Mailbox<br />
mail_spool_directory=/var/<wbr />spool/mail<wbr /><br />
<br />
This way postix will accept the message and store it in the mail_spool_directory for the user.<br />
<br />
note this setup will use the system user, from /etc/passwd &nbsp;as the username@yourdomain.com <br />
<br />
you would need to handle the virtualmap if needed to handle different.<br />
<br />
This is merely a test to confirm that the postfix side is setup to accept emalis from the domain in question and can deliver it.<br />
<br />
The followup is to determine what the issue with the dovecot-lmtp is it an issue that the component to which it is trying to connect is not running, or the configuration for where it should store the messages it received etc.<br />
<br />
see if dovecot has its own log that can help identify what the issue is.<br />
<br />
IMHO, the postfix setup is complete to do what you want, it is passing the email to dovecot-lmtp to have it store the message according to the configuration for the recipient.
</div>


<div>
Lets try it another way, can you confirm what the status of the lmtp service is?<br />
<br />

<blockquote>
<br />
service lmtp {<br />
&nbsp;unix_listener /var/spool/postfix/private<wbr />/dovecot-l<wbr />mtp {<br />
&nbsp; &nbsp;mode = 0600<br />
&nbsp; &nbsp;user = postfix<br />
&nbsp; &nbsp;group = postfix<br />
&nbsp; }<br />
}<br />

</blockquote>
<br />
Note further, dovecot seems to prefer storing files in Maildir formation which means it has to be within the user's home dir ~username/Maildir<br />
which must exist I would think, I do not know whether dovecot will create the Maildir for the user is missing.
</div>


<div>
I can still not get an email to show in the /var/spool/mail directory.<br>I believe that you are right about dovecot but I can not seem to resolve the issue.<br>Can I share the directories on the apache web server so you can see them yourself? Let me know and I will put them on <a href="https://thesheppards" rel="ugc"></a><a href="https://thesheppards.name" rel="ugc">https://thesheppards.name</a><br>[root@mail mail]# telnet thesheppards.name 25<br>Trying 216.118.150.90...<br>Connected to thesheppards.name.<br>Escape character is '^]'.<br>220 mail.thesheppards.name ESMTP Postfix<br>quit<br>221 2.0.0 Bye<br>Connection closed by foreign host.<br>[root@mail mail]#<br><br>Alson here are two screen captures that show the <a rel="ugc nofollow" target="_blank">name.com</a>&nbsp;and <a rel="ugc nofollow" target="_blank">DuoCircle.com</a>&nbsp;<br><br><a href="https://filedb.experts-exchange.com/incoming/2021/07_w29/1566796/Screen-Shot-2021-07-11-at-4.42.42-PM.png" rel="ugc">Screen Shot 2021-07-11 at 4.42.42 PM.png</a><br><a href="https://filedb.experts-exchange.com/incoming/2021/07_w29/1566797/Screen-Shot-2021-07-11-at-4.40.30-PM.png" rel="ugc">Screen Shot 2021-07-11 at 4.40.30 PM.png</a>
</div>


<div>
Did you make changes to /etc/postfix/main.cf as suggested or confirm the status of dovecot's LMTP service to make sure it is running?<br />
<br />
Not sure what I am looking at the images, the error logs from postfix are clear.<br />
It accepts the message. It identifies the recipient as local it then passes the message to the lmtp portion for the final local delivery, it then hits a buzzsaw when it can not connect to the dovecot-lmtp. connection refused.<br />
Message processing deferred.<br />
<br />
Consider it this way, you have a shipping dock. You have postfix there who checks the packages brought by an external vendor.<br />
postfix has a directive to call dovecot-lmtp to handle the final delivery of any packages depetermined to be for the office building. Postfix is prohibited from maintaining inventory, keeping packages.<br />
<br />
A delivery arrives. Postfix check, the package is for an office in the building. <br />
Postfix picks up the phone and calls dovecot-lmtp, but there is no answer, <br />
After 5 rings, postfix appo;logieses to the delivery person, and says, sorry, I can not accept this package at this time. Try another time later.<br />
<br />
<br />
Your issue currently is a failure to communicate between postfix and dovecot-lmtp<br />
<br />
The Document you provided for dovecot includes the setup of postfix to pass to dovecot for the final local disposition. <br />
<br />
AT this stage, first thing to check is whether the lmtp service is configured and is running on the system.<br />
you could use strace to attach to the postfix &nbsp;PID<br />
i.e. ps -ef | grep postfix<br />
<br />
strace -f -p PID_of_main_posfix where parent is PPID 1.<br />
<br />
Then inject a message and see what happens when it tries to connect to dovecot-lmtp. <br />
Is the service not running, or the setting from which it should accept connection is incorrectly set....<br />
<br />
recheck your setups in the dovecot configuration link (2nd)
</div>


<div>
Likely best to follow @arnold's suggestion - Split Postfix + Dovecot.<br />
<br />
Looking closely at the above messages it appears the Postfix -&gt; Dovecot lsmtp connector is somehow broken.
</div>


<div>
Ok I'll work on that tomorrow morning. I am very grateful for your input to my issues. I'll try again tomorrow and work on dovecot-lsmtp.<br>Brian
</div>


<div>
Hi I have made the postfix and dovecot config files available on my apache:<br><a href="http://thesheppards.name/brian/ConFigFiles/" rel="ugc">http://thesheppards.name/brian/ConFigFiles/</a>&nbsp;<br>Can you view them and see if I have do it right?<br>Brian
</div>


<div>
the config lacks the answer to one question,<br />
<br />
what is the status of the configration step described under the heading, &quot;Using Dovecot to Deliver Email to Message Store&quot;<br />
<br />
deals with setting a service lmtp?<br />
<br />
<br />
The section preceding it deals with the config file for dovecot 10-mail.conf<br />
dovecot is configured to use ~/Maildir format which means there is no way that you will find any emails in the /var/spool/mail or in a Mailbox format.<br />
<br />
after another look, your postfix main.cf is missing the mailbox_transport <br />
<br />
You seem to be relying on the location from postfix versus the one from the guide you are following to setup.<br />
<br />
From the document and the heading referenced above, the postfix changes in main.cf need to reflect the following on the mailbox_transport line.<br />
See if you have a unix socket in /var/spool/postfix/private<wbr />/dovecot-l<wbr />mtp<br />

<blockquote>
mailbox_transport = lmtp:unix:private/dovecot-<wbr />lmtp<br />
smtputf8_enable = no
</blockquote>
<br />
<br />
check /var/log/messages for mail log entries from dovecot to see what it reports.<br />
look at the dovecot logging configre and enable debugging, possible change the loggin facilit from mail to another local1 as an example, then in /etc/rsyslog.conf or /etc/syslog.conf depending which syslogger is running on your system and add an entry <br />
local1.* &nbsp;/var/log/dovecot.log<br />
<br />
you may have to add a configuration to manage the log /etc/logtotate/logroate.co<wbr />nf.d/<br />
<br />
need to see when the message is being passed to dovecot what happens.<br />
<br />
Where is the definitional email address map in dovcot to determine where the user home direcotry is to deliver the message in a Maildir format within that location?<br />
<br />
many of this confirations are as they were when distributed. Do you use mysql/mariadb/postresql as the backend for the user list?
</div>


<div>
I will be working on this on Sunday. I’ll have free time then. Just so you know that my old box still can route email and the issue I was having with the mail hop side was not an issue at all. Thanks cya Sunday&nbsp;
</div>


<div>
Not sure I understand.<br />
<br />
When you send to an external source on this system, does it reach the destination?<br />
<br />
The error on lmtp deals with the final delivery.<br />
Issue how you envision dovcot to handle. the user list and their hone directory, Maildir creation.<br />
<br />
I think the link you provided includes the change to have dovxot deliver the message to a mailbox style storage /var/spoil/$username which is the default postfix location.<br />
<br />
I'll see how your Sunday goes, and if needed will spin up aVM and see if I can identify this issue.
</div>


<div>
Arnold <br>I am free tomorrow afternoon can I contact you then as I wish to speak with you about this it seems like I am at an impasse.&nbsp;<br>Brian&nbsp;
</div>


<div>
You can message me within EE.<br />
<br />
The information is locked in within your dovecot setup dealing with how users are managed and settings.
</div>


<div>
I am trying to contact David or Arnold to see if my configuration is correct? When would be a good time?<br>Brian
</div>


<div>
The error from.dovcot re line 108. potentially mismatched, peemateur closing Bruce, is taking longer to determine<br />
<br />
Do you have a copy of the original?<br />
Will update
</div>


<div>
I don't have an original copy of 10-master.conf I just edited what I had sorry. Do you,have a copy?<br>Brian
</div>


<div>
Do you think that I should junk may dovecot installation and start fresh? I think that I'm missing the proper configuration files.<br>Brian
</div>


<div>
I resolved the 10-master.conf bracket issue<br>now I get a /etc/dovecot/conf.d/90-acl.conf line 11: Unknown setting: namespace { plugin { plugin<br>I don't edit that file with my walk through. Not sure what to do?<br>I have included the systemctl status dovecot.service output!<br>Brian<br><br>[root@mail dovecot]# systemctl status dovecot.service<br>● dovecot.service - Dovecot IMAP/POP3 email server<br>&nbsp; &nbsp;Loaded: loaded (/usr/lib/systemd/system/dovecot.service; enabled; vendor preset: disabled)<br>&nbsp; &nbsp;Active: failed (Result: exit-code) since Mon 2021-08-02 21:37:50 ADT; 1s ago<br>&nbsp; &nbsp; &nbsp;Docs: man:dovecot(1)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;http://wiki2.dovecot.org/<br>&nbsp; Process: 586118 ExecStart=/usr/sbin/dovecot -F (code=exited, status=89)<br>&nbsp; Process: 586111 ExecStartPre=/usr/libexec/dovecot/prestartscript (code=exited, status=0/SUCCESS)<br>&nbsp;Main PID: 586118 (code=exited, status=89)<br><br>Aug 02 21:37:49 mail.thesheppards.name systemd[1]: Starting Dovecot IMAP/POP3 email server...<br>Aug 02 21:37:50 mail.thesheppards.name systemd[1]: Started Dovecot IMAP/POP3 email server.<br>Aug 02 21:37:50 mail.thesheppards.name dovecot[586118]: doveconf: Fatal: Error in configuration file /etc/dovecot/conf.d/90-acl.conf line 11: Unknown setting: namespace { plugin { plugin<br>Aug 02 21:37:50 mail.thesheppards.name dovecot[586118]: doveconf: Error: managesieve-login: dump-capability process returned 89<br>Aug 02 21:37:50 mail.thesheppards.name dovecot[586118]: doveconf: Fatal: Error in configuration file /etc/dovecot/conf.d/90-acl.conf line 11: Unknown setting: namespace { plugin { plugin<br>Aug 02 21:37:50 mail.thesheppards.name systemd[1]: dovecot.service: Main process exited, code=exited, status=89/n/a<br>Aug 02 21:37:50 mail.thesheppards.name systemd[1]: dovecot.service: Failed with result 'exit-code'.<br>[root@mail dovecot]#
</div>


<div>
The acl, can you confirm the existence of the referenced items?<br />
It has plugins, but the items within are commented out
</div>


<div>
Hi Brian, Chasing issues down, ..<br />
<br />
Do you use a virtual Environment i.e. can create a new virtual Machine?<br />
IMHO, always start from the bare essentials.<br />
configure postfix after it is setup and operating, add and configure dovecot to handle the lmtp delivery.<br />
once that is handled, add the client facing components: imap/s, pop3/s etc/<br />
<br />
The difficulty I am running into is understanding how and where the domain based emails are.<br />
<br />
the dovecot tie-in as a delivery agent has several components.<br />
one deals with postfix talking to the auth component one potentially whether to accept the message for a recipient in the first place.<br />
Once accepted it submits it to the LMTP process that supposed to deliver it.<br />
<br />
If you are using /etc/passwd as the accounts and the home to where the messages in Maildir format should be dropped,making sure the folders get created by ..<br />
<br />
In several things, lmtp should be running under root when it drops to the user during delivery.<br />
<br />
In your current state, dovecot is in an error state ACL deals with access control, while plugins defined, the the options are commented out.<br />
<br />
dovecot loads all .conf files for the conf.d file.<br />
<br />
Items presumed to be default still need to exist.<br />
<br />
I think the step by step application at a time should be more straight forward.<br />
<br />
This way it might be simpler.
</div>


<div>
Brian<br />
<br />
Your postfix config is fine. if it was functioning as the MTA. dropping mail into a Mailbox format in /home/username.<br />
<br />
try the following, in your /etc/dovecot/conf.d/10-mas<wbr />ter.conf <br />
<br />
on the line unix_listener definition, change the mode from 0600 to 0666 see what that does?
</div>


<div>
Arnold,<br>I will be working on the issue Saturday and Sunday as I am doing cart repairs Friday. I'll contact you when thanks for your input. I be starting dovecot fresh on that date and this is top avoid any latent issues that dovecot has.<br>Brian
</div>


<div>
Ok, when you start with dovecot, keep in mind how or what manages the user, domain list.
</div>


<div>
Brian, <br />
<br />
your setup already altered postfix to deliver the message to a user's !/Mailbox<br />
you can change it to Maildir<br />
home_mailbox = Maildir/ in postfix's main.cf<br />
and dovecot IMAP/POP will be able to access it.<br />
<br />
You did not setup any virtual account handling on the dovecot side<br />
<br />
web based list postfixadmin.<br />
<br />
I.e. deals with management of the domain email addresses whether you want to use email addresses that are based on /etc/passwd<br />
<br />
i.e. user1 in /etc/passwd will correspond to user1@yourdomain.com<br />
<br />
<br />
<a href="https://postfixadmin.sourceforge.io/" rel="ugc">https://postfixadmin.sourceforge.io/</a><br />
<br />
The difference, the users will be virtual, no presence on the /etc/passwd<br />
<br />
managed from a variety of DBs mariadb/mysql, etc.<br />
<br />
not sure if I seid it earlier, but running doveconf<br />
after each change, to make sure it is not erroring out.<br />
<br />
I think in your 15-mailbox.conf or 10-mail.conf there was a closing } that ......
</div>


<div>
Arnold,<br>I am going to scrap this approach for now.<br><a href="https://computingforgeeks.com/setup-mail-server-on-centos-with-postfix-dovecot-mysql-roundcube/" rel="ugc">https://computingforgeeks.com/setup-mail-server-on-centos-with-postfix-dovecot-mysql-roundcube/</a>&nbsp;<br>This is what I am going to try. It seems to be a better way of handling the issues that I am experiencing.<br>I'll be posting tomorrow. I hope to get this working, soon!<br>Brian
</div>


<div>
Hi Brian, my advice is define what your needs are first.<br />
How many users/email addresses do you need.<br />
<br />
The mysql/mariadb is the data backend<br />
That postfix and dovecot will use to validate accounts/access <br />
<br />
The newer approach expands access options to add web based interface in addition to what dovecot presented.<br />
You ran into an issue when dovecot was being setip.as the local delivery agent.<br />
<br />
Going from one guide to another will give you knowledge of the individual components <br />
<br />
Logs are always a starting point to determine what is going on, causing errors.
</div>


<div>
Arnold,<br>I have that postfix and dovecot installed but Roundcube seems to be giving me some issues?? I will look into this tonight/tomorrow and contact you then. <br>Thanks for your help with this!<br>Brian
</div>


<div>
What error does the roundube reflect in the web server /var/log/ httpd or Apache <br />
<br />
Access_log show?<br />
Do you need a web based access to emails?
</div>


<div>
<br><a href="https://filedb.experts-exchange.com/incoming/2021/08_w33/1568940/Roundcube-Webmail-Installer.pdf" rel="ugc">Roundcube Webmail Installer.pdf</a><br><a href="https://filedb.experts-exchange.com/incoming/2021/08_w33/1568941/config.inc.php" rel="ugc">config.inc.php</a><br>What logs do you need? I will look at this tomorrow. I just want the easiest configuration possible.<br>Thanks for your input!<br>Brian<br><br>
</div>


Roundcube-Webmail-Installer.pdf

config.inc.php

<div>
The roundcube is a web based, webmail, interface that allows users access to their email <br />
In addition to access available through imao/Imaps using an email client outlook,Thunderbird, etc.<br />
<br />
IMHO, confirm the email flow works. ,before addressing enhancing the user access.<br />
<br />
A message injected into the server is delivered?<br />

<blockquote>
<br />
echo &quot;To: local_recipient<br />
From: sender<br />
Subject: test<br />
<br />
This is a test | /usr/sbin/sendmail -oi -fsender -t
</blockquote>
<br />
See If the message gets delivered into the user's Maildir.
</div>


<div>
As @Arnold mentioned...<br />
<br />
RoundCube/IMAP != PostFix/SMTP<br />
<br />
No correlation between these products.<br />
<br />
You'll search your Postfix log files for 1x unique Message-ID (per above) to trace the life of 1x message.
</div>


<div>
I am busy until tomorrow, but will be at this then!<br>Brian
</div>


<div>
I really thank you all for your assistance but due to un for seen issues I have to stop my email server fort right now. Family issues I am keeping Expert-Exchange and will start fresh in a Month!<br>Brian&nbsp;
</div>


<div>
<div class="content wysiwyg-content fr-view">
I am trying to set up an email server and I am having some issues. Postfix seems to be configured correctly. But I can not get that email messages to come down from gateway. I can provide logs but that website I used to configure was: <a href="https://www.linuxbabe.com/redhat/run-your-own-email-server-centos-postfix-smtp-server" rel="ugc">https://www.linuxbabe.com/redhat/run-your-own-email-server-centos-postfix-smtp-server</a> and <a href="https://www.linuxbabe.com/redhat/install-dovecot-centos-enable-tls-encryption" rel="ugc">https://www.linuxbabe.com/redhat/install-dovecot-centos-enable-tls-encryption</a>&nbsp;.<br><br>[root@mail postfix.service.d]# systemctl status postfix<br>● postfix.service - Postfix Mail Transport Agent<br>&nbsp; &nbsp;Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor preset: disabled)<br>&nbsp; Drop-In: /etc/systemd/system/postfix.service.d<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;└─restart.conf<br>&nbsp; &nbsp;Active: active (running) since Sun 2021-07-11 16:52:54 ADT; 1 day 6h ago<br>&nbsp; Process: 7420 ExecStop=/usr/sbin/postfix stop (code=exited, status=0/SUCCESS)<br>&nbsp; Process: 7440 ExecStart=/usr/sbin/postfix start (code=exited, status=0/SUCCESS)<br>&nbsp; Process: 7438 ExecStartPre=/usr/libexec/postfix/chroot-update (code=exited, status=0/SUCCESS)<br>&nbsp; Process: 7434 ExecStartPre=/usr/libexec/postfix/aliasesdb (code=exited, status=0/SUCCESS)<br>&nbsp;Main PID: 7508 (master)<br>&nbsp; &nbsp; Tasks: 4 (limit: 99996)<br>&nbsp; &nbsp;Memory: 5.8M<br>&nbsp; &nbsp;CGroup: /system.slice/postfix.service<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;├─ 7508 /usr/libexec/postfix/master -w<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;├─ 7510 qmgr -l -t unix -u<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;├─19305 tlsmgr -l -t unix -u<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;└─37175 pickup -l -t unix -u<br><br>Jul 12 22:16:21 mail.thesheppards.name postfix/smtpd[36274]: disconnect from unknown[2.56.59.35] ehlo=1 auth=0/1 rset=1 quit=1 commands=3/4<br>Jul 12 22:33:00 mail.thesheppards.name postfix/qmgr[7510]: 7CDB440E59DC: from=&lt;bmsheppard@me.com&gt;, size=4159, nrcpt=1 (queue active)<br>Jul 12 22:33:00 mail.thesheppards.name postfix/qmgr[7510]: 0679840E5AB9: from=&lt;&gt;, size=2976, nrcpt=1 (queue active)<br>Jul 12 22:33:00 mail.thesheppards.name postfix/qmgr[7510]: 241D940E5AB4: from=&lt;&gt;, size=2786, nrcpt=1 (queue active)<br>Jul 12 22:33:00 mail.thesheppards.name postfix/lmtp[36565]: 7CDB440E59DC: to=&lt;brian@thesheppards.name&gt;, relay=none, delay=109395, delays=109395/0.01/0.01/0, dsn=4.4.1, status=deferred (connect to mail.thesheppards.name[private/dovecot-lmtp]: Connection refused)<br>Jul 12 22:33:00 mail.thesheppards.name postfix/lmtp[36569]: 241D940E5AB4: to=&lt;brian@thesheppards.name&gt;, orig_to=&lt;root@mail.thesheppards.name&gt;, relay=none, delay=109924, delays=109924/0.02/0.01/0, dsn=4.4.1, status=deferred (connect to mail.thesheppards.name[private/doveco&gt;<br>Jul 12 22:33:00 mail.thesheppards.name postfix/lmtp[36567]: 0679840E5AB9: to=&lt;brian@mail.thesheppards.name&gt;, relay=none, delay=109539, delays=109539/0.01/0.01/0, dsn=4.4.1, status=deferred (connect to mail.thesheppards.name[private/dovecot-lmtp]: Connection refused)<br>Jul 12 22:49:51 mail.thesheppards.name postfix/smtpd[37086]: connect from unknown[2.56.59.35]<br>Jul 12 22:49:52 mail.thesheppards.name postfix/smtpd[37086]: discarding EHLO keywords: CHUNKING<br>Jul 12 22:49:53 mail.thesheppards.name postfix/smtpd[37086]: disconnect from unknown[2.56.59.35] ehlo=1 auth=0/1 rset=1 quit=1 commands=3/4
</div>
</div>



I am trying to set up an email server and I am having some issues. Postfix seems to be configured correctly. But I can not get that email messages to come down from gateway. I can provide logs but that website I used to configure was:
https://www.linuxbabe.com/redhat/run-your-own-email-server-centos-postfix-smtp-server
and
https://www.linuxbabe.com/redhat/install-dovecot-centos-enable-tls-encryption
 .
[root@mail postfix.service.d]# systemctl status postfix
● postfix.service - Postfix Mail Transport Agent
   Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor preset: disabled)
  Drop-In: /etc/systemd/system/postfix.service.d
           └─restart.conf
   Active: active (running) since Sun 2021-07-11 16:52:54 ADT; 1 day 6h ago
  Process: 7420 ExecStop=/usr/sbin/postfix stop (code=exited, status=0/SUCCESS)
  Process: 7440 ExecStart=/usr/sbin/postfix start (code=exited, status=0/SUCCESS)
  Process: 7438 ExecStartPre=/usr/libexec/postfix/chroot-update (code=exited, status=0/SUCCESS)
  Process: 7434 ExecStartPre=/usr/libexec/postfix/aliasesdb (code=exited, status=0/SUCCESS)
 Main PID: 7508 (master)
    Tasks: 4 (limit: 99996)
   Memory: 5.8M
   CGroup: /system.slice/postfix.service
           ├─ 7508 /usr/libexec/postfix/master -w
           ├─ 7510 qmgr -l -t unix -u
           ├─19305 tlsmgr -l -t unix -u
           └─37175 pickup -l -t unix -u
Jul 12 22:16:21 mail.thesheppards.name postfix/smtpd[36274]: disconnect from unknown[2.56.59.35] ehlo=1 auth=0/1 rset=1 quit=1 commands=3/4
Jul 12 22:33:00 mail.thesheppards.name postfix/qmgr[7510]: 7CDB440E59DC: from=<bmsheppard@me.com>, size=4159, nrcpt=1 (queue active)
Jul 12 22:33:00 mail.thesheppards.name postfix/qmgr[7510]: 0679840E5AB9: from=<>, size=2976, nrcpt=1 (queue active)
Jul 12 22:33:00 mail.thesheppards.name postfix/qmgr[7510]: 241D940E5AB4: from=<>, size=2786, nrcpt=1 (queue active)
Jul 12 22:33:00 mail.thesheppards.name postfix/lmtp[36565]: 7CDB440E59DC: to=<brian@thesheppards.name>, relay=none, delay=109395, delays=109395/0.01/0.01/0, dsn=4.4.1, status=deferred (connect to mail.thesheppards.name[private/dovecot-lmtp]: Connection refused)
Jul 12 22:33:00 mail.thesheppards.name postfix/lmtp[36569]: 241D940E5AB4: to=<brian@thesheppards.name>, orig_to=<root@mail.thesheppards.name>, relay=none, delay=109924, delays=109924/0.02/0.01/0, dsn=4.4.1, status=deferred (connect to mail.thesheppards.name[private/doveco>
Jul 12 22:33:00 mail.thesheppards.name postfix/lmtp[36567]: 0679840E5AB9: to=<brian@mail.thesheppards.name>, relay=none, delay=109539, delays=109539/0.01/0.01/0, dsn=4.4.1, status=deferred (connect to mail.thesheppards.name[private/dovecot-lmtp]: Connection refused)
Jul 12 22:49:51 mail.thesheppards.name postfix/smtpd[37086]: connect from unknown[2.56.59.35]
Jul 12 22:49:52 mail.thesheppards.name postfix/smtpd[37086]: discarding EHLO keywords: CHUNKING
Jul 12 22:49:53 mail.thesheppards.name postfix/smtpd[37086]: disconnect from unknown[2.56.59.35] ehlo=1 auth=0/1 rset=1 quit=1 commands=3/4

How do I trace email to configure postfix?

Redhat

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.