On Tue, 20 Nov 2007, Janet N wrote:
> How do I enable DKIM Filter to ignore the Body message if it is missing?
> 
> I've sent an email with a missing Body message and it failed to verify. 
> I am running DKIM Filter v2.2.0 with Canonicalization relaxed/relaxed.
>
> I've tried switching the Canonicalization to simple, but DKIM still 
> expect a body message :(

The filter will accept a message with an empty body without difficulty.

The message should verify against any autoresponder with "relaxed" body 
canonicalization, but we had a bug in libdkim so the "simple" body case 
was not interoperable.  This is fixed in 2.4.0 (now in Beta).  However, 
the "simple" case should verify the same way against our own autoresponder 
since the flaw is symmetric.

If you are sending empty messages and getting verification failures, it 
could be that an intermediate MTA is adding a blank line to the null 
message body.  That's just a guess though.

-MSK

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