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Need exchange expert help

Posted on 2006-07-19
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Last Modified: 2012-05-05
Why would I be receiving messages such as the one below through my smtp connector ?? Using Exchange 2003 in a Windows 2003 Domain.

Your message did not reach some or all of the intended recipients.

      Subject:      textbook
      Sent:      7/19/2006 1:37 PM

The following recipient(s) could not be reached:

      sehs_05@yahoo.com on 7/19/2006 12:44 PM
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <ittechie100.Server.COM #5.5.0 smtp;554 delivery error: dd Sorry your message to sehs_05@yahoo.com cannot be delivered. This account has been disabled or discontinued [#102]. - mta204.mail.re2.yahoo.com>
0
Comment
Question by:ittechie100
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23 Comments
 

Author Comment

by:ittechie100
ID: 17139809
Here's another one. I have over 8,000 of these that appear to be all from unknown recipients being sent
to unknown people. Why would these be coming throug my connector/exchange server ?? Is there a way to have then rejected!


Your message did not reach some or all of the intended recipients.

      Subject:      hollywood hull
      Sent:      7/19/2006 1:45 PM

The following recipient(s) could not be reached:

      bigtc2@charter.net on 7/19/2006 12:50 PM
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <This is my servername.COM #5.5.0 smtp;501 #5.1.1 bad address bigtc2@charter.net>
0
 

Author Comment

by:ittechie100
ID: 17139991
Can anyone give me some insight on this issue ?
0
 
LVL 37

Accepted Solution

by:
Jamie McKillop earned 500 total points
ID: 17140373
You have have mistakenly configured your server as an open relay. In ESM, expand your server->Protocols->SMTP, right-click Default SMTP Server and choose Properties. On the Access tab, click Relay and make sure the "Only the list below..." radio button is selected.

JJ
0
 

Author Comment

by:ittechie100
ID: 17140679
And leave nothing in the list ?
0
 

Author Comment

by:ittechie100
ID: 17140685
Should I check Allow any authenticated users reguardless of list ?
0
 
LVL 37

Expert Comment

by:Jamie McKillop
ID: 17140712
If you have servers or workstations that use this server as an SMTP relay, you will need to add those IPs to the list. You should check "Allow any authenticated users..."

JJ
0
 

Author Comment

by:ittechie100
ID: 17140816
Is there a way to completly block all of these emails from evening trying to send throug my smtp connector ?
8,000 emails a day has got to put a strain on it ???
0
 

Author Comment

by:ittechie100
ID: 17140850
I noticed while changing the relay settings that the que had several dozen listings for

Internet Mail SMTP connector (My connector) then sbcglobal.net, pillnetwork.net, earthlink.net
with several dozen messages under each that only have options to freeze or unfreeze.
Are these messages that my connector is trying to send ? Some of them have over 1,000
messages....

Are they waiting to be sent, or blocked messages ?
0
 
LVL 37

Expert Comment

by:Jamie McKillop
ID: 17140860
Once you follow my instructions, you Exchange server will no longer be an open relay and the spammers will stop trying to use it after a while. BTW - 8,000 e-mails per day is nothing. My server recevies over 100,000 per day and we are only a midsize company.

JJ
0
 
LVL 37

Expert Comment

by:Jamie McKillop
ID: 17140875
Those messages in the queues will eventually time out and be automatically deleted.

JJ
0
 

Author Comment

by:ittechie100
ID: 17140883
I made the changes you indicated, restarted my server and just received another 80 administrative alerts...
Before I was only receiving around 20 a day....
0
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LVL 37

Expert Comment

by:Jamie McKillop
ID: 17140931
Administrative alerts for what?
0
 

Author Comment

by:ittechie100
ID: 17140937
I visited dnsreport.com, entered my domain name and still getting this error :

WARNING: One or more of your mailservers appears to be an open relay. If so, this means that you are allowing spammers to freely use the mailserver to send out spam! It is possible that your mailserver accepts all E-mail and later bounces it, or accepts the relay attempt and then deletes the E-mail, but this is not common.
WARNING: mydomain.com appears to be an open relay: 250 2.1.5 Not.abuse.see.www.DNSreport.com.from.IP.    MY IP Address@DNSreport.com

I have changed this on my dns servers, however it doesn't ever reflect here...Maybe my name servers settings ???

WARNING: Your SOA RETRY interval is : 86400 seconds. This seems very high. You should consider decreasing this value to about 120-7200 seconds. The retry value is the amount of time your secondary/slave nameservers will wait to contact the master nameserver again if the last attempt failed.
0
 

Author Comment

by:ittechie100
ID: 17140947
I've got the admin alerts for undeliverable or problematic mail to send to my email address.
0
 
LVL 37

Expert Comment

by:Jamie McKillop
ID: 17140981
dnsreport caches info and probably hasn't refreshed since you made the change. Try testing at ordb.org

JJ
0
 

Author Comment

by:ittechie100
ID: 17140995
Thanks for all of your help. Everything was working fine, however one site we could not send and receive
email to except sporadically and they kept saying it was our server...Hence the changes...
0
 

Author Comment

by:ittechie100
ID: 17141056
Now I am back with the orginal bounced messages to the site I was telling you about.
I am trying to forward an email and they keep bouncing with error:

relaying denied. I am a valid user of the subnet I entered in the relaying field///so why would this
be?
0
 
LVL 37

Expert Comment

by:Jamie McKillop
ID: 17141114
What client/protocol are you using to connect to the Exchange server?

JJ
0
 

Author Comment

by:ittechie100
ID: 17141145
Outlook 2003
0
 
LVL 37

Expert Comment

by:Jamie McKillop
ID: 17141163
You are using it in MAPI mode or POP?

JJ
0
 

Author Comment

by:ittechie100
ID: 17141200
Neither, using the Exchange Server option.
0
 

Author Comment

by:ittechie100
ID: 17141419
????
0
 
LVL 37

Expert Comment

by:Jamie McKillop
ID: 17145309
Are you able to send to any other outside recipients?
0

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