Postfix

NeerVerma
NeerVerma used Ask the Experts™
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Please let me know how to configure POSTFIX in step wise manner.
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Commented:
What linux distro are you using?

Author

Commented:
CentOS & redhat
Kerem ERSOYPresident
Commented:
Hi,

In fact Postfix comes already configured and ready to run. But there are of course extras such as :
- SASL (user authentication & Relay)
- TLS (SMTP over SSL)
- Sender and client restirctions,
- Checking Blacklists,
- DKIM
- Antivirus and Antispam Checking (Amavis, Clam and Spamassassin)

etc.

Wil you tell me what is that you need ?? Before us experts could suggest you the conifguration steps?
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Author

Commented:
my company want his mail server & told me to configure postfix. so i asked u to help me
Commented:
You have instructions here if you're doing from scratch:

http://wiki.centos.org/HowTos/postfix#head-0a5cbfe5357c64b698ecfea3aae71746dbe34d9f



Commented:
talking of setting up postfix starts here:
http://www.postfix.org/BASIC_CONFIGURATION_README.html
Distinguished Expert 2017
Commented:
Step by steps instructions differ based on how you plan on managing users and what other options/settings you want/need.
I.e. anti-virus, anti-spam
AD/LDAP managed users. Common storage NFS etc. for redundancy i.e. you would have multiple server that will store the data into a central location.

The others have posted some of the step-by-step guides.

You might want to get webmin to graphically manage/configure the server.
Commented:
The thing is, NeerVerma, there is no easy way to do it. It is not hard either, but you have to read a bit, any step by step script will not work all the way. You need to read and understand a bit, otherwise you'll get stuck pretty soon on any step by step guide.

Installing is not the end of your task there, any server needs to be managed, updated. You'll be happy later that you gave it a bit of time now.

The howto's posted above are a great start and you'll see, it'll grow on you! :)
Kerem ERSOYPresident

Commented:
You might as well go for Zimbra. It is open source including Postfix and most of the componenets I mention above and tightly integrated. Including some other components and Web Collaboration suite similar to Outlook Web Access..

http://www.zimbra.com

Cheers,
K.

Author

Commented:
i know about zimbra & its nice but they don't want spend money.
Kerem ERSOYPresident

Commented:
Zimbra is free if you don't want to rebrand or modify it and If you don't need extras such as Exchange or blackberry plugins.

Besides even if you won't use Zimbra it is wort to take a look how did they configured so much services to work together. So it could be a nice start.

I'm using a highly customized postfix in the company. But After taking a look to zimbra I've notices several features that they have implemented and ported them back to my installation.

Cheers,
K.

Author

Commented:
i configured it for company but the want only postfix
Kerem ERSOYPresident

Commented:
Yeah this is what I want to say Zimbra has Postfix as MTA and they also configured
- Clamd
- SpamAssasin,
- Amavis,
- DKIM
- SASL

to work with it. This is why I've suggest you to set it up somewhere and check the configuration they have.. It would be a good start for you to see how to configure postfix.

Otherwise this iplace is not a how-to guide. You can get specific responses to your specific questions only. Your initial Question is very broad. This is why you've got only links for implementation but real advice on it.

Cheers,
K.

Commented:
Then you have the links with the step by step instructions above.

If you decide to start, I recommend closing this question and starting a different one when you encounter specific problems.

That way you'll get help on the issues you have, on the spot.

Good luck!
Configuring postfix has been made very simple using the webmin tool.. Download the webmin rpm. Install the rpm... access the webmin panel using any browser. e.g. http://ip_of_server:10000... the login page appears ....click on postfix ... every thing here is self explainable...

Cheers...  

Author

Commented:
hi,
I configured postfix but i am facing some problem to send mail & got this error.

[root@server1 ~]# mailq
-Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient-------
01ADD1BD895      463 Wed Oct 27 15:41:59  neeraj@linuxgeeks.in
                                                (unknown mail transport error)
                                         nverma0@gmail.com
                                         neerajlko80@yahoo.com

105901BD8A1      439 Wed Oct 27 16:23:17  neeraj@linuxgeeks.in
                                                (unknown mail transport error)
                                         v.neeraj@hotmail.com

17E061BD88B      458 Wed Oct 27 13:59:48  neeraj@linuxgeeks.in
                                                (unknown mail transport error)
                                         nverma0@gmail.com
                                         neerajlko80@yahoo.com

B523A1BD88A      461 Wed Oct 27 13:56:39  root@linuxgeeks.in
                                                (unknown mail transport error)
                                         nverma0@gmail.com
                                         neerajlko80@yahoo.com
please help me to resolve this issue.
thanks
The error will be in your /var/log/maillog. Please check the maillog may be it is not able to find some folder or the rights to the folder is not as required. You may restart the postfix service and check the part in the log when postfix starts...
Have you checked from the box if you are pointing to the correct dns.. just ping yahoo.com or google.com etc...

Commented:
This is an entirely different question. This question should be closed and another one started with the right description of the issue.

You cannot get the attention of people that might help because your issue is not reflected in the Question's description.
Distinguished Expert 2017

Commented:
Did you configure your postfix to connect to a remote server?  Did you define /etc/postfix/transport you may have not properly entered the information?



http://www.postfix.org/transport.5.html
if you need a smart host through which you will relay:


Please post your main.cf file.

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