Re: Making postfix hand old deferred messages somewhere else?

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Making postfix hand old deferred messages somew...
\ Michael Loftis (28 Jun 2007)
. \ Noel Jones (28 Jun 2007)
. . \ Geert Hendrickx (28 Jun 2007)
. \ Gary Mort (2 Jul 2007)

Subject:	Re: Making postfix hand old deferred messages somewhere else?
Group:	Postfix-users
From:	Geert Hendrickx
Date:	28 Jun 2007

On Thu, Jun 28, 2007 at 04:44:42PM -0500, Noel Jones wrote:
> At 02:19 PM 6/28/2007, Michael Loftis wrote:
> >It might not be at all possible inside of postfix, but, is there a
> >way to get it to take deferred messages that are older than say a
> >day and send them to a designated MTA? I'd like to get the big
> >chunks of mail for dead domains or slow domains off my main mail
> >servers and onto a small(er) set of retry/redelivery machines.
>
> You can use smtp_fallback_relay to send mail to an alternate MTA if
> it fails on the first try.
> http://www.postfix.org/postconf.5.html#smtp_fallback_relay

We're using this with the same goal as Michael (offloading to "slow mail
servers" which larger queue disks), but it works pretty bad with things
like greylisting.

It would be interesting to have (something like) smtpd_fallback_relay only
apply to mails that have failed to deliver N times or for N hours/days.

Geert