Hello,
We have introduced DKIM signing for our domains and strict checking for
the incoming mail. One of our users sent an email to a google group, and
from the log I can see that it was signed:
Jan 24 18:02:54 smtp2 amavis[6230]: (06230-01) Passed CLEAN
{RelayedOutbound}, ORIGINATING LOCAL ... dkim_new=20151130:wigner.mta.hu
The group contains another local user, so the message was sent back... and
landed in the quarantine because our valid DKIM signature is completely
missing! There's a DKIM-Signature from googlegroups.com in the email
header.
Is this a normal practice? Why does google groups strip existing DKIM
signatures?
Best regards,
Jozsef
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E-mail : [email protected], [email protected]
PGP key : http://www.kfki.hu/~kadlec/pgp_public_key.txt
Address : Wigner Research Centre for Physics, Hungarian Academy of Sciences
H-1525 Budapest 114, POB. 49, Hungary
