Hi all,
I've got a couple of complains from customers saying that the vacation
message is not being received by Gmail users. Our email service is quite
standard, with dovecot+sieve processing the email storage and
autoresponders.
I've confirmed that the problem is true:
2024-08-27 11:08:09 1sisBN-002eWx-KM <= <> H=(mydovecot.host)
[172.30.6.182] P=esmtp K S=1087
id=dovecot-sieve-1724749689-16845...@mydovecot.host
2024-08-27 11:08:10 1sisBN-002eWx-KM ** randomgmailu...@gmail.com
R=hubbed_hosts T=remote_smtp H=gmail-smtp-in.l.google.com
[173.194.76.27]
X=TLS1.3:ECDHE_X25519__ECDSA_SECP256R1_SHA256__AES_256_GCM:256 CV=yes
DN="CN=mx.google.com": SMTP error from remote mail server after
pipelined end of data: 550-5.7.26 Your email has been blocked because
the sender is unauthenticated.\n550-5.7.26 Gmail requires all senders to
authenticate with either SPF or DKIM.\n550-5.7.26\n550-5.7.26
Authentication results:\n550-5.7.26 DKIM = did not pass\n550-5.7.26
SPF [] with ip: [555.555.555.555] = did not
pass\n550-5.7.26\n550-5.7.26 For instructions on setting up
authentication, go to\n550 5.7.26
https://support.google.com/mail/answer/81126#authentication
ffacd0b8rr97d-373081420c7si4806836f8f.262 - gsmtp
2024-08-27 11:08:10 1sisBN-002eWx-KM Frozen (delivery error message)
I think that sending the vacation messages with null sender is an
standard practise and the best way to avoid loops. I've found no
problems with any other email providers: only gmail is blocking this
messages.
Does anyone have this issue? How do you deal with it?
Best regards.
--
Eduardo Díaz Comellas
Ultreia Comunicaciones, S.L.
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