Hi.
Did anyone notice DKIM issues (mails failing signature verification or body
hash not matching) with mails coming from these servers?
emea01-db3-obe.outbound.protection.outlook.com
emea01-am1-obe.outbound.protection.outlook.com
EUR01-DB5-obe.outbound.protection.outlook.com
EUR01-HE1-obe.outbound.protection.outlook.com
EUR01-VE1-obe.outbound.protection.outlook.com
Most of messages coming from these servers validate properly but some fail
verification (I have over 1k of failed copies).
Now that can be bug on microsoft side or on my side (exim MTA).
If verification fails I'm early saving a raw copy of the message. Tools like
dkimverify.pl (perl Mail-DKIM) or dkimverify.py (python-dkim) confirm that
saved messages do not pass dkim checking (that still leaves some room for a
bug in exim between smtp session and saving a raw copy but it's unlikely).
Thanks,
--
Arkadiusz Miśkiewicz, arekm / ( maven.pl | pld-linux.org )
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