Gentoo Archives: gentoo-server

From: Kurt Lieber <klieber@g.o>
To: gentoo-server@l.g.o
Subject: Re: [gentoo-server] (postfix) backup mx to host:port other then :25
Date: Fri, 15 Oct 2004 16:06:39
Message-Id: 20041015160632.GJ26288@mail.lieber.org
In Reply to: [gentoo-server] (postfix) backup mx to host:port other then :25 by Christian Parpart
1 On Fri, Oct 15, 2004 at 05:51:15PM +0200 or thereabouts, Christian Parpart wrote:
2 > I want to backup mx a server that is *not* accessible via default
3 > port 25.
4 > Is there a way to configure the backup mx in that way it sends data to the
5 > master server port != 25?
6
7 It's not entirely clear what exactly you want to do, but you can make mail
8 respond on any port you want. The problem is going to be that other mail
9 servers expect to contact you on TCP port 25 and, if you want to receive
10 mail, you'll need to answer on that port.
11
12 In other words, you can configure a backup mail server to respond on 25,
13 but you can't get other mail servers (outside of your control) to send mail
14 to that non-standard port.
15
16 --kurt

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