Hi guys!

Thank you very much for the answers!

I think Sam's suggestion for #1 would be a nice feature: redirecting RBLd
mails to another address
The main point would be to have the possibility to give users an accidentaly
RBL-denied message in their mailbox, and not just tell them that the message
has been denied, so I can't do anything about that, because the IP is on an
RBL-list. This way I could perhaps user more stronger RBLs which of couse
might even produce false positives (but I don't really want to, I'm using
xbl.spamhaus.org).
If I could quarantine these messages somehow, and delete messages that are a
few days old, then this would not be a problem. Subject rewrite is also a
good idea here of course, because then I can use maildrop to filter the mail
in user folders. I don't know howto bypass spamassassin in this situation
but if the "TO" rewrite is possible, I can tell qmail-scanner to not execute
any scanners on a particular address or domain.

#2 is a feature I read somewhere, that could help reduce false positives
caused by RBLs. If a message comes from an RBL-listed IP, then you can put
it on greylist, but just those messages who are from RBL. This way it would
be almost impossible to deny messages that are ham, but probably
spamassassin would have to deal with many more messages, because a lot of
RBLd IPs would get through the greylisting technique. So this was just an
idea, but maybe it wouldn't be too good.

Thanks again for the help!

Regards,
Daniel


Peter Kieser wrote:
> Sam Clippinger wrote, On 6/3/2008 8:02 AM:
>
>> I'm not sure how to implement your second suggestion.  Specifically, I'm
>> not sure how to make it easily configurable.  Some kind of advanced
>> rules configuration would need to exist, so you could write a
>> configuration file that says: "If a message matches an RBL, graylist it
>> instead of rejecting it.  All other filters behave normally."  That's
>> probably a long way away.
>>
>> -- Sam Clippinger
>>
>
> What about rewriting the Subject?
>
> -Peter
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