postfixbitfreak.org
Date: Mon Dec 01 2008 - 15:40:21 CST

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Ronald MacDonald wrote:
> It's been a hectic couple of weeks, and I'm getting complaints from
> users after having upgraded to a new system that mails are coming in
> which have been spoofed. I see exactly what's going on - a rogue
> system opens up port 25 on my system, tells it the mail's from one of
> the users on the system, and then sends the mail to the same user,
> completely bypassing my content-filter (amavis) as it's not checked
> against the sender or recipient restrictions, somehow.
>
> However, in one of those "crap, what do I do now" moments, I'm
> confuzzled as to how to get Postfix to realise that the mail *should*
> be checked, since it's coming in from outside the network.
>
> Any ideas as to what might be the best way to fix this?

Thank you for the postconf -n output. Please also provide logs of such
email bypassing your content filter. We can't help you trace the email
and find the configuration error without them.

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