From: Sahil Tandon (sahiltandon.net)
Date: Thu May 29 2008 - 19:05:56 CDT

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Rod G <postfixusergmail.com> wrote:

> Hello. In main.cf I have the following configured for recipient
> restrictions. My Internet connection went down for about 5 minutes
> yesterday and some mail sent within that down time was rejected with
> "Recipient address rejected: Domain not found", as expected with the
> "reject_unknown_recipient_domain" parameter in the configuration. In
> normal operation I would like mail for domains that do not exist
> (typos) to be rejected so the user knows immediately that there was a
> problem. However, I wouldn't like this to happen if and when the
> Internet connection drops out and the server is unable to resolve MX
> records. Is there a different way to do this?

What you mean by "this" is unclear, but my guess is no, there is no different
way. Postfix issues a 450 response, so the MTA will try again and mail
should eventually go through.

--
Sahil Tandon <sahiltandon.net>

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