i'm a bit late on this comment (i'm backed up 6000 messages on my mailing
lists), but..

if you have the backup mailserver listed as a secondary MX for a domain in
your DNS server, you don't even need a file with the domains in.

just set:
        smtpd_recipient_restrictions = $mydestination, permit_mx_backup

-Tony
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Anthony J. Biacco Network Administrator/Engineer
thelittleprinceasteroid-b612.org Intergrafix Internet Services

    "Dream as if you'll live forever, live as if you'll die today"
http://www.asteroid-b612.org http://www.intergrafix.net
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On Wed, 7 Feb 2001, Vivek Khera wrote:

> >>>>> "SP" == Steve Price <stevefreebsd.org> writes:
>
> SP> How does one go about setting up a backup mailserver? Besides
> SP> setting up DNS is it as easy as setting relay_domains like so?
>
> SP> relay_domains = $mydomain, hash:/usr/local/etc/postfix/virtual
>
> Yes, amazingly enough. For the virtual hosts, I use a flat-file and
> just list the domains one per line. I assume a hash: map would work
> too, but I've never tried.
>
>

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