[Exim] exiscan: SA can't check Received: header - Fix

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Autor: Tom Kistner
Data:  
A: 'exim-users@exim.org', exiscanusers@duncanthrax.net
Assumpte: [Exim] exiscan: SA can't check Received: header - Fix
Hi lists,

something that might be important for a larger number of installations
using exiscan-acl with SA:

Exim only adds the local "Received:" header at the end of message
reception, after all ACLs are run. That also means that SA never sees
that header and then can't run its dnslist checks on the IP addresses
contained in it. This decreases accuracy with direct-to-MX spam if you
are using SA with network checks enabled (which is the default setting).

Since that seems important, I have fixed this in a "devel" version,
available as

http://duncanthrax.net/exiscan-acl/exiscan-acl-4.31-17-devel.patch

regards,

/tom