My mailserver keeps getting on blacklists and many items in the outbound SMTP queueu due to this problem.
After applying the registry key described here: https://www.mailenable.com/kb/content/a ... D=ME020480 the adding to blacklist is reduced, but not totaly fixed.
Why the setting in Postoffice Settings > Under 'General Settings' Redirection handling > Remail from mailbox is not working. If this option is working correctly, all problems are gone!
Current version is ME Pro 10.19
Some data from the message tracker:
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10/29/18 16:09:57 SMTP-OU 1F8DD2E8B38A4CF097672F056C03C1B8.MAI 1676 108.177.126.26 CONN 220 mx.google.com ESMTP d6-v6si2733106eja.115 - gsmtp 0 55 [replace subject]
10/29/18 16:09:57 SMTP-OU 1F8DD2E8B38A4CF097672F056C03C1B8.MAI 1676 108.177.126.26 EHLO EHLO mail02.skyhost.systems 250-mx.google.com at your service, [136.144.139.3] 29 169 [replace subject]
10/29/18 16:09:57 SMTP-OU 1F8DD2E8B38A4CF097672F056C03C1B8.MAI 1676 108.177.126.26 EHLO STARTTLS 220 2.0.0 Ready to start TLS 10 30 [replace subject]
10/29/18 16:09:57 SMTP-OU 1F8DD2E8B38A4CF097672F056C03C1B8.MAI 1676 108.177.126.26 EHLO EHLO mail02.skyhost.systems 250-mx.google.com at your service, [136.144.139.3] 29 155 [replace subject]
10/29/18 16:09:57 SMTP-OU 1F8DD2E8B38A4CF097672F056C03C1B8.MAI 1676 108.177.126.26 MAIL MAIL FROM:<notification@facebookmail.com> SIZE=15391 250 2.1.0 OK d6-v6si2733106eja.115 - gsmtp 54 44 [replace subject]
10/29/18 16:09:57 SMTP-OU 1F8DD2E8B38A4CF097672F056C03C1B8.MAI 1676 108.177.126.26 RCPT RCPT TO:<xxxxxxxxxx@gmail.com> 250 2.1.5 OK d6-v6si2733106eja.115 - gsmtp 39 44 [replace subject]
10/29/18 16:09:57 SMTP-OU 1F8DD2E8B38A4CF097672F056C03C1B8.MAI 1676 108.177.126.26 DATA DATA 354 Go ahead d6-v6si2733106eja.115 - gsmtp 6 45 [replace subject]
10/29/18 16:09:58 SMTP-OU 1F8DD2E8B38A4CF097672F056C03C1B8.MAI 1676 108.177.126.26 DATE . 421-4.7.0 [136.144.139.3 15] Our system has detected an unusual rate of 15403 432 [replace subject]
10/29/18 16:09:58 SMTP-OU 1F8DD2E8B38A4CF097672F056C03C1B8.MAI 1676 108.177.126.26 QUIT QUIT - 6 0 [replace subject]
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10/29/18 16:09:57 ME-IXXXX: [1F8DD2E8B38A4CF097672F056C03C1B8.MAI] DNS resolved to the following record: IP Address=108.177.126.26, Family=2, Type=1, Protocol=6
10/29/18 16:09:58 ME-I0148: [1F8DD2E8B38A4CF097672F056C03C1B8.MAI] DATE (DATA Termination) command failed with temporary return code.
10/29/18 16:09:58 ME-E0034: [1F8DD2E8B38A4CF097672F056C03C1B8.MAI] DATA command returned with a 421 response, meaning that the entire message should be retried.
10/29/18 16:09:58 ME-I0009: [1F8DD2E8B38A4CF097672F056C03C1B8.MAI] Remote server has closed connection after 0 milliseconds. Server Response: (-)
10/29/18 16:09:58 ME-E0033: [1F8DD2E8B38A4CF097672F056C03C1B8.MAI] DATA Transmission failed.
10/29/18 16:09:58 ME-E0059: [1F8DD2E8B38A4CF097672F056C03C1B8.MAI] Message Delivery Failure. Attempt (2): Domain (gmail.com) returned temporary error for email. Message has been requeued.
Thanks for a solution!