> -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Robert > Wysocki > Sent: Thursday, April 26, 2012 4:08 AM > To: [email protected] > Subject: [exim] DKIM verification and envelope-from > > I'm trying to achieve configuration that would verify DKIM signatures > for known signers. > Everything works fine until envelope-from address is one of known > signers. But many spams have envelope-from set differently than From: > header, eg. [email protected] in envelope-from and > [email protected] in From: header. > This enables them to bypass DKIM signature checks and therefor to > bypass one of the anti-spam mechanisms. > > How can I instruct exim to include From: headers' content in known > signers checks?
Why wouldn't you base the "known-signer" test on From: instead of the envelope sender? -MSK -- ## List details at https://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/
