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http://bugs.exim.org/show_bug.cgi?id=1252
           Summary: Add a "no_more" rule to DKIM ACL processing
           Product: Exim
           Version: 4.80
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: wishlist
          Priority: medium
         Component: DKIM
        AssignedTo: [email protected]
        ReportedBy: [email protected]
                CC: [email protected]


When processing email with DKIM signatures by default the DKIM ACL is called
once for each of the signatures in the message ($dkim_current_signers) - there
may be none, one or more - often two signatures.

On occasions where there are more than one signature one may be correct and the
other incorrect.

In my ACL processing I often want to accept (or deny) a message based on the
DKIM signature and then cease any further processing of DKIM, i.e. terminate
the ACL - I want this for cases like where we have two signatures in the
message and the first results in "accept" and the second in "deny", or
vise-versa.

What I think is needed is something like a "no_more" clause that could be used
at the end of the ACL entry like this:


        accept  sender_domains = +dkim_known_signers
                dkim_status = pass
                logwrite = DKIM PASS: Accepted $sender_address_domain is known
signer and has good signature
                add_header = :after_received:X-DKIM-Result:
Domain=$sender_address_domain Result=Good and Known Domain
                no_more

So that if we have accepted it then that's the end if it.

Mike Tubby


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