@Chistros I just tried, but that does not change this issue, still getting a mangled/broken header, again showing early on in dkim/dmarc milters results (= no changes):
Jul 24 15:31:24 postfix/smtpd[1758]: connect from ***.226.threembb.co.uk[***.226] Jul 24 15:31:24 postfix/smtpd[1758]: Anonymous TLS connection established from 92.40.249.226.threembb.co.uk[***.226]: TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits) Jul 24 15:31:25 postfix/smtpd[1758]: 27584FA3: client=***.226.threembb.co.uk[***.226], sasl_method=PLAIN, sasl_username=p***@***.fr Jul 24 15:31:25 postfix/smtpd[1758]: 27584FA3: reject: RCPT from ***.226.threembb.co.uk[***226]: 450 4.1.2 <[email protected]>: Recipient address rejected: Domain not found; from=<p***@***.fr> to=<nobody@gmail72 .com> proto=ESMTP helo=<[10.***]> Jul 24 15:31:25 postfix/cleanup[1579]: 27584FA3: message-id=<> Jul 24 15:31:25 opendkim[19808]: 27584FA3: can't determine message sender; accepting Jul 24 15:31:25 opendmarc[619]: 27584FA3: RFC5322 requirement error: missing >From field; accepting Jul 24 15:31:25 postfix/qmgr[1457]: 27584FA3: from=<p***@***.fr>, size=34, nrcpt=2 (queue active) Jul 24 15:31:25 postfix/smtp[1663]: Untrusted TLS connection established to gmail-smtp-in.l.google.com[2a00:1450:400c:c04::1b]:25: TLSv1.2 with cipher ECDHE-RSA-CHACHA20-POLY1305 (256/256 bits) Jul 24 15:31:25 postfix/smtpd[1758]: disconnect from 92.40.249.226.threembb.co.uk[92.40.249.226] ehlo=2 starttls=1 auth=1 mail=1 rcpt=2/3 data=1 quit=1 commands=9/10 Jul 24 15:31:25 dahlia postfix/smtp[1663]: 27584FA3: to=<j***@gmail.com>, relay=gmail-smtp-in.l.google.com[2a00:1450:400c:c04::1b]:25, delay=0.79, delays=0.57/0/0.11/0.11, dsn=5.7.1, status=bounced (host gmail-smtp-in.l.google.com[2a00:1450:400c:c04::1b] said: 550-5.7.1 [2a01:4f8:10a:2493:b827:a8ff:fe4b:b71c 11] Our system has 550-5.7.1 detected that this message is not RFC 5322 compliant: 550-5.7.1 'From' header is missing. 550-5.7.1 To reduce the amount of spam sent to Gmail, this message has been 550-5.7.1 blocked. Please visit 550-5.7.1 https://support.google.com/mail/?p=RfcMessageNonCompliant 550 5.7.1 and review RFC 5322 specifications for more information. 135si37543938wmb.130 - gsmtp (in reply to end of DATA command)) However again, from the webmail the reject from Postfix results in full stop until the recipients list is fixed by sender. I'll test from Thunderbird tonight, but this looks like a K9-Mail issue (using the stock version installed on /e/). -- Sent from: http://postfix.1071664.n5.nabble.com/Postfix-Users-f2.html
