Move SMTP To Different Port

[mporter]

Is it possible to move SMTP to a port other than 25? I want to run qmail in front of Zimbra on the same server.


-Z

[KevinH]

Change zimbraSmtpPort

[anand]

Kevin's comment answers how to get the tomcat process to use a different SMTP server port.

If you want the Zimbra postfix smtpd to listen on something other than port 25, you will need some (small, but serious) master.cf surgery. Search google.

[phoenix]

Is it possible to move SMTP to a port other than 25? I want to run qmail in front of Zimbra on the same server.

My question would be, why do you want to run qmail when Zimbra will provide the functionality you need? Perhaps a description of your thinking/problem/requirements might help.

[andreychek]

If you want the Zimbra postfix smtpd to listen on something other than port 25, you will need some (small, but serious) master.cf surgery. Search google.

Perhaps I simply wasn't searching for the right terms, but it took me a bit before I found the exact syntax.

For anyone else who goes around looking for how to make the Zimbra SMTP server run (listen) on an alternate port, I found the answer here:

http://www.kobitosan.net/postfix/ori...dA-en.html#4.6

Which basically says to edit master.cf, and comment out this line:

#smtp inet n - n - - smtpd

And to make it read:

2525 inet n - n - - smtpd

This assumes '2525' is the port you wish to have the Zimbra SMTP server running on.

Of course, you need to make sure you know what you're doing before changing this, as it means Zimbra is no longer running on the standard SMTP/Email port... so, you either have to have something else running in it's place (qmail, for example, was mentioned in the original question), or all the clients sending you email have to know about the new port.

Have fun :-)
-Eric