On 10/24/2018 4:53 PM, Дилян Палаузов wrote:
PS:

Please describe the handling, of the above message by the MLM, if the
original message contained in addition
   DKIM-Signature: v=1; d=isdg.net; r=y; …

... or something different than r=y, that permits finding faulty DKIM
implementations.

Our DKIM implementation does not support this "r=y" tag. In general, per DKIM specification, all unknown DKIM-signature tags are ignored.

<<< 554 REJECTED BY SYSTEM POLICY FILTER
Last-Attempt-Date: Wed, 24 Oct 2018 20:32:15 GMT

Off hand, it appears your IP address was filtered by a Geo IP Location database. This is done immediately at the connection level so we have limited SMTP session logs to look at.

I'm contacting you off list.

--
HLS


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