Mihamina Rakotomandimby (R12y) wrote: > Tomasz Chmielewski wrote: >> I have an Exim box which forwards certain addresses to another server, i.e.: >> - Exim accepts [email protected] >> - delivers it to server_2 for [email protected] >> Now, server_2 rejects this mail for some reason (user does not exist, >> spam etc.). > > That happens everyday, and the only one annoyed is the one into the "From:" > If you intend to block on "From:" you really get the risk to encounter > false positive, seeing the quantitiy of forged "From:". > > I dont think it's a good idea. Why not passing it through spamassassin > _before_ fowarding? (I dont know how yet) >
Providing you are calling SA in the DATA phase, not 'post queue' that is automagical. Ditto ClamAV and sputniks. The forwarding doesn't happen until router/transports are entered, and even there one could do post-smtp-session filtering before local or remote delivery. IF/AS/WHEN one needs to avoid potentially instrusive filtering AND NOT risk upsetting the destination *server*, there are ways to 'warp' the entire message and headers, EG: - 'print' the incoming message and headers to a .pdf file, send the file to the destination as a 'safe' attachment with a one-line text-body 'transmittal' note. - Or as a tar / zip / gz or other archive attachment. Not always as welcome by far-end filter rules. .pdf is about as good as it gets. These things need a lot more work to set up, but can also support fax & voice message content. HTH, Bill -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
