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Subject: Re: backup MX
From: Wietse Venema (wietseporcupine.org)
Date: Sun Mar 05 2000 - 08:38:50 CST

Gunnar Lindholm:
> Hello.
> I'm trying to figure out how to set up postfix to work as a mail backup for my
> home network. I have set up one box as primary mailer (mx pref. 10) and another
> one with mx pref. 100. The DNS is correct set up I think. But now I want to
> shutdown the primary one, and then send a lot of mail to my domain, just to see
> that the secondary one takes over the mail and queue it for a while. I have a
> /etc/postfix/main.cf that I dont think is right. So therefore,
> 1) Can some one with a similar setup send me a working main.cf that I can
> study?

On the backup host, add the primary domain to relay_domains.

> 2) Can someone tell me how to controll how often postfix should try to send the
> mail from the queue on the secondary mailer to the primary one.

http://www.postfix.org/html#backoff

        Wietse