On 03.06.24 11:16, Marc wrote:
Hi Andrew, this is a bit of topic, I posted this a while ago on the mailing
list. But did you notice by any chance that eg. hotmail.com is failing
every dkim verification (except their sender rewritten messages)?
I have checked yesterdays logs on one machine:
Jun 4 08:57:50 proxy1 opendmarc[1815]: 4VthHc4zf1zMlJH: hotmail.com pass
Jun 4 09:22:58 proxy1 opendmarc[1815]: 4Vthrc0mrNzMlFy: hotmail.com pass
Jun 4 12:25:10 proxy1 opendmarc[1815]: 4Vtmts4GXGzMlM0: outlook.com fail
Jun 4 12:32:17 proxy1 opendmarc[1815]: 4Vtn336J76zMl7T: hotmail.com pass
Jun 4 12:36:04 proxy1 opendmarc[1815]: 4Vtn7R1B6pzMlCK: hotmail.com pass
Jun 4 12:39:01 proxy1 opendmarc[1815]: 4VtnBr5mfRzMlB6: hotmail.com pass
Jun 4 17:36:30 proxy1 opendmarc[1815]: 4Vtvp4063FzMlM4: hotmail.com pass
Jun 4 21:24:20 proxy1 opendmarc[1815]: 4Vv0rz0TXJzMlLw: outlook.com pass
Jun 4 21:30:55 proxy1 opendmarc[1815]: 4Vv10b0BFZzMlLv: outlook.com pass
The failing 4Vtmts4GXGzMlM0 is DSN, which microsoft software (including
on-premise exchange servers) seems not to dkim-sign.
I guess that the From: header is added after DKIM signing.
however we see no issues with hotmail DKIM signatures.
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
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