OSEC

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Re: [PATCH] Handle unreachable host in address verification as 200

From: D Hill (d.hillyournetplus.com)
Date: Fri Apr 25 2008 - 17:21:13 CDT


On Sat, 26 Apr 2008 at 00:03 +0200, postfixprotection-fault.ch confabulated:

> Hello,
>
> If postfix is configured as a backup MX with mail relaying and you do
> for example a recipient address verification on that host but that host
> is at that time not reachable, current postfixes will handle this an 450
> error.
>
> This patch will let you allow to modify the behaviour so your postfix
> will accept the e-mail in the case the primary MX is not reachable.

I'm not a C programmer. If you accept that message which later on
turns out the recipient does not exist. What happens? If you generate a
bounce, you generate backscatter.