From: Anders (mailflac.kalibalik.dk)
Date: Mon May 26 2008 - 07:44:48 CDT

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Hi.

We are currently running SQLgrey with good results, but sometimes delayed
mails can be an annoyance. Also, there is some concern about us not being
able to recover affected mails.

For these reasons, I would like to greylist only after DATA. This way, we
could have the rejected mails in a quarantine area. Also, we could
greylist only above some SpamAssassin threshold.

I know that this could be done with a before-queue content filter, but I
have not been able to find any. Is there some recommended tool for this
setup (Postfix friendly, obviously)?

Before I go writing my own, is the lack of such a tool due to it being a
really bad idea? We have sufficient bandwidth, CPU and disk resources for
this setup, but I read that there might also be some compatibility
problems with tempfail after DATA. I have, however, not been able to find
any real data on the size of this problem.

Thanks for any help,
Anders.

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