Re: [exim] Second class Email

Russell Wilton schrieb:
> I am running RedHat Linux and Exim 4.52 on a box in my DMZ. It acts as
> a spam/virus scanner and smart host relay for an Exchange box inside my
> firewall. The Exchange users insist that their 'Out-of-Office'
> autoreply messages need to be sent to external addresses as well as
> internal. We haven't found a way to prevent Exchange from sending
> 'Out-of-Office' messages in reply to spam, so the smart host gets a lot
> of Autoreplys addressed to invalid addresses. When it can't deliver
> them it sends a bounce message back to the Exchange users, so for every
> spam they also get a non-delivery notice for the 'Out-of-Office' message.
>
> These 'Out-of-Office' messages are easily identifiable by their subject
> line, and I would like to treat them similar to the way bounce messages
> are treated: try to deliver them for a short period of time, and if they
> are non-deliverable, just delete them. I know from experience that Exim
> is incredibly flexible, but I haven't been able to figure out how to
> make it do this. Any thoughts or pointers would be much appreciated.
> Thanks.

Just don't allow messages from senders that don't accept bounces into
your system in the first place. Sender verification with callouts is
your friend here.

HTH,
Patrick Eisenacher