temmokan at gmail
May 8, 2008, 2:09 AM
Post #1 of 1
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Exim questions: allow mail from unroutable addresses, pipe transport question
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Hello,
First, if anyone is interested, I managed to solve the problem of
using DSPAM when it is vital that all the possible messages duplicates
be eliminated *before* the messages are processed by spam-filter and
delivered.
It was done by using transport_filter, of course. It's not much of a
walkaround (since I don't think that making spam-filtering via a
router is that more correct).
1. However I would like to ask those knowing the Exim intrinsics: if
a router is used as intermediate message processing (like it was in my
case), is it inevitable that message duplicates will occur?
I explain the problem: we have several 'multi-forward' mail addresses
of the kind:
multibox[at]example.com: multibox,<list of other recipients>
A message can be sent to many such multi-forwarders simultaneously (in
To/Cc fields) and it is essential that in such cases a person receive
a single copy of the same message.
However, if pipe transports beget a new instance of Exim they call to
continue message processing, then duplicates become inevitable - I
couldn't exclude them until I eliminated the router/pipe transport
pair to preprocess messages.
2. Also, if someone could provide an advice on how to allow just
several unroutable (unverifiable) sender addresses, I would be glad.
The problem: we receive automated messages with fake (non-existing)
sender addresses. We have no control over the sender's network and I
wouldn't like to rewrite the addresses just to make them real ones -
they must be left inatct. But I won't to allow unroutable addresses
from anywhere as well.
is it possible to allow just selected unroutable addresses and deny
all the rest?
Thanks.
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