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Old 11-27-2007, 01:00 AM   #1
ankur arora
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installaton and testing of postfix and role of mailman

i want to know how can i configure postfix mail server in centOS 5....
what is the role of mailman and HORDE IMP along with postfix....
also how can i install OTRS in centOS 5 ????

can anybdy tell me the whole process of postfix installation?????
Old 12-20-2007, 02:47 PM   #2
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If you're still having trouble, this might help.

I was just setting up my first email server and this helped a lot. There are some other references that I used, but I can't find their urls. Found all of my help using Google.
Old 12-20-2007, 03:11 PM   #3
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Please note that CentOS, like other RH derivatives, uses sendmail by default.

Run the utility system-switch-mail from the command line as root (you may need to install it with "yum install system-switch-mail), and it will set a range of system variables and symlinks for you (ie make postfix the default in place of sendmail). This step will take you about a minute and will save you a lot of grief.

Aside from that, start at the howto section at


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