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I need help to solve a problem sending mail to ARMY.MIL and US.AF.MIL
Problem reported by Gabriele Maoret - SERSIS - 10/29/2021 at 12:28 AM
Resolved
Starting two days ago we are having issues sending emails to @ARMY.MIL and @US.AF.MIL addresses...

Can you help me to solve this issue?


Messages remain in the queue for a while making attempts that give this message:


After a while they fail.



This is an example LOG:


[2021.10.29] 09:15:10.207 [5219604] Delivery started for test@proemail.it (via kxxx@smxxxx.yyyy.com) at 09:15:10
[2021.10.29] 09:15:16.225 [5219604] Added to SpamCheckQueue (1 queued; 0/30 processing)
[2021.10.29] 09:15:16.225 [5219604] [SpamCheckQueue] Begin Processing.
[2021.10.29] 09:15:16.225 [5219604] Blocked Sender Checks started.
[2021.10.29] 09:15:16.240 [5219604] [Cyren Client] Start Scanning Message. Enabled Services: All, MailFrom: test@proemail.it, SenderIP: 185.223.198.37, MessagePath: s:\SmarterMail\Spool\SubSpool5\5219604.eml
[2021.10.29] 09:15:16.365 [5219604] [Cyren Client] Done Scanning Message. MessagePath: s:\SmarterMail\Spool\SubSpool5\5219604.eml Results AV: Unknown, AS: Unknown
[2021.10.29] 09:15:16.365 [5219604] Spam Checks started.
[2021.10.29] 09:15:16.365 [5219604] Spam Checks skipped: User authenticated
[2021.10.29] 09:15:16.365 [5219604] Spam Checks completed.
[2021.10.29] 09:15:16.365 [5219604] Removed from SpamCheckQueue (0 queued or processing)
[2021.10.29] 09:15:19.225 [5219604] Added to RemoteDeliveryQueue (1 queued; 0/50 processing)
[2021.10.29] 09:15:19.225 [5219604] [RemoteDeliveryQueue] Begin Processing.
[2021.10.29] 09:15:19.225 [5219604] Sending remote mail from test@proemail.it
[2021.10.29] 09:15:19.318 [5219604] [Cyren Client] Start Scanning Message. Enabled Services: All, MailFrom: test@proemail.it, SenderIP: 185.223.198.37, MessagePath: s:\SmarterMail\Spool\SubSpool5\5219604.eml
[2021.10.29] 09:15:19.428 [5219604] [Cyren Client] Done Scanning Message. MessagePath: s:\SmarterMail\Spool\SubSpool5\5219604.eml Results AV: Unknown, AS: Unknown
[2021.10.29] 09:15:19.475 [5219604] Spam check results: [_CUSTOMRULES: ], [_INTERNALSPAMASSASSIN: 3:5], [_CYREN: 0,Unknown], [_MESSAGESNIFFER: 0,code:0]
[2021.10.29] 09:15:20.272 [5219604] MxRecord count: '4' for domain 'us.af.mil'
[2021.10.29] 09:15:26.709 [5219604] Attempting MxRecord Host Name: 'pri-usaf-eemsg.eemsg.mail.mil', preference '10', Ip Count: '0'
[2021.10.29] 09:15:32.211 [5219604] Attempting MxRecord Host Name: 'pri-nipr.eemsg.mail.mil', preference '20', Ip Count: '0'
[2021.10.29] 09:15:38.602 [5219604] Attempting MxRecord Host Name: 'sec-nipr.eemsg.mail.mil', preference '30', Ip Count: '0'
[2021.10.29] 09:15:44.071 [5219604] Attempting MxRecord Host Name: 'ter-nipr.eemsg.mail.mil', preference '40', Ip Count: '0'
[2021.10.29] 09:15:44.071 [5219604] Removed from RemoteDeliveryQueue (0 queued or processing)
[2021.10.29] 09:16:46.361 [5219604] Added to RemoteDeliveryQueue (1 queued; 0/50 processing)
[2021.10.29] 09:16:46.361 [5219604] [RemoteDeliveryQueue] Begin Processing.
[2021.10.29] 09:16:46.361 [5219604] Sending remote mail from test@proemail.it
[2021.10.29] 09:16:46.361 [5219604] [Cyren Client] Start Scanning Message. Enabled Services: All, MailFrom: test@proemail.it, SenderIP: 185.223.198.37, MessagePath: s:\SmarterMail\Spool\SubSpool5\5219604.eml
[2021.10.29] 09:16:46.424 [5219604] [Cyren Client] Done Scanning Message. MessagePath: s:\SmarterMail\Spool\SubSpool5\5219604.eml Results AV: Unknown, AS: Unknown
[2021.10.29] 09:16:46.455 [5219604] Spam check results: [_CUSTOMRULES: ], [_INTERNALSPAMASSASSIN: 3:5], [_CYREN: 0,Unknown], [_MESSAGESNIFFER: 0,code:0]
[2021.10.29] 09:16:47.424 [5219604] MxRecord count: '4' for domain 'us.af.mil'
[2021.10.29] 09:16:47.424 [5219604] Attempting MxRecord Host Name: 'pri-usaf-eemsg.eemsg.mail.mil', preference '10', Ip Count: '0'
[2021.10.29] 09:16:47.424 [5219604] Attempting MxRecord Host Name: 'pri-nipr.eemsg.mail.mil', preference '20', Ip Count: '0'
[2021.10.29] 09:16:47.424 [5219604] Attempting MxRecord Host Name: 'sec-nipr.eemsg.mail.mil', preference '30', Ip Count: '0'
[2021.10.29] 09:16:47.424 [5219604] Attempting MxRecord Host Name: 'ter-nipr.eemsg.mail.mil', preference '40', Ip Count: '0'
[2021.10.29] 09:16:47.424 [5219604] Removed from RemoteDeliveryQueue (0 queued or processing)
[2021.10.29] 09:17:49.490 [5219604] Added to RemoteDeliveryQueue (1 queued; 0/50 processing)
[2021.10.29] 09:17:49.490 [5219604] [RemoteDeliveryQueue] Begin Processing.
[2021.10.29] 09:17:49.490 [5219604] Sending remote mail from test@proemail.it
[2021.10.29] 09:17:49.490 [5219604] [Cyren Client] Start Scanning Message. Enabled Services: All, MailFrom: test@proemail.it, SenderIP: 185.223.198.37, MessagePath: s:\SmarterMail\Spool\SubSpool5\5219604.eml
[2021.10.29] 09:17:49.553 [5219604] [Cyren Client] Done Scanning Message. MessagePath: s:\SmarterMail\Spool\SubSpool5\5219604.eml Results AV: Unknown, AS: Unknown
[2021.10.29] 09:17:49.600 [5219604] Spam check results: [_CUSTOMRULES: ], [_INTERNALSPAMASSASSIN: 3:5], [_CYREN: 0,Unknown], [_MESSAGESNIFFER: 0,code:0]
[2021.10.29] 09:17:50.506 [5219604] MxRecord count: '4' for domain 'us.af.mil'
[2021.10.29] 09:17:50.506 [5219604] Attempting MxRecord Host Name: 'pri-usaf-eemsg.eemsg.mail.mil', preference '10', Ip Count: '0'
[2021.10.29] 09:17:50.506 [5219604] Attempting MxRecord Host Name: 'pri-nipr.eemsg.mail.mil', preference '20', Ip Count: '0'
[2021.10.29] 09:17:50.506 [5219604] Attempting MxRecord Host Name: 'sec-nipr.eemsg.mail.mil', preference '30', Ip Count: '0'
[2021.10.29] 09:17:50.506 [5219604] Attempting MxRecord Host Name: 'ter-nipr.eemsg.mail.mil', preference '40', Ip Count: '0'
[2021.10.29] 09:17:50.506 [5219604] Removed from RemoteDeliveryQueue (0 queued or processing)
[2021.10.29] 09:20:52.843 [5219604] Added to RemoteDeliveryQueue (1 queued; 1/50 processing)
[2021.10.29] 09:20:52.843 [5219604] [RemoteDeliveryQueue] Begin Processing.
[2021.10.29] 09:20:52.843 [5219604] Sending remote mail from test@proemail.it
[2021.10.29] 09:20:52.843 [5219604] [Cyren Client] Start Scanning Message. Enabled Services: All, MailFrom: test@proemail.it, SenderIP: 185.223.198.37, MessagePath: s:\SmarterMail\Spool\SubSpool5\5219604.eml
[2021.10.29] 09:20:52.905 [5219604] [Cyren Client] Done Scanning Message. MessagePath: s:\SmarterMail\Spool\SubSpool5\5219604.eml Results AV: Unknown, AS: Unknown
[2021.10.29] 09:20:52.952 [5219604] Spam check results: [_CUSTOMRULES: ], [_INTERNALSPAMASSASSIN: 3:5], [_CYREN: 0,Unknown], [_MESSAGESNIFFER: 0,code:0]
[2021.10.29] 09:20:53.530 [5219604] MxRecord count: '4' for domain 'us.af.mil'
[2021.10.29] 09:20:53.530 [5219604] Attempting MxRecord Host Name: 'pri-usaf-eemsg.eemsg.mail.mil', preference '10', Ip Count: '0'
[2021.10.29] 09:20:53.530 [5219604] Attempting MxRecord Host Name: 'pri-nipr.eemsg.mail.mil', preference '20', Ip Count: '0'
[2021.10.29] 09:20:53.530 [5219604] Attempting MxRecord Host Name: 'sec-nipr.eemsg.mail.mil', preference '30', Ip Count: '0'
[2021.10.29] 09:20:53.530 [5219604] Attempting MxRecord Host Name: 'ter-nipr.eemsg.mail.mil', preference '40', Ip Count: '0'
[2021.10.29] 09:20:53.530 [5219604] Removed from RemoteDeliveryQueue (1 queued or processing)
[2021.10.29] 09:25:53.722 [5219604] Added to RemoteDeliveryQueue (1 queued; 4/50 processing)
[2021.10.29] 09:25:53.722 [5219604] [RemoteDeliveryQueue] Begin Processing.
[2021.10.29] 09:25:53.722 [5219604] Sending remote mail from test@proemail.it
[2021.10.29] 09:25:53.722 [5219604] [Cyren Client] Start Scanning Message. Enabled Services: All, MailFrom: test@proemail.it, SenderIP: 185.223.198.37, MessagePath: s:\SmarterMail\Spool\SubSpool5\5219604.eml
[2021.10.29] 09:25:53.785 [5219604] [Cyren Client] Done Scanning Message. MessagePath: s:\SmarterMail\Spool\SubSpool5\5219604.eml Results AV: Unknown, AS: Unknown
[2021.10.29] 09:25:53.832 [5219604] Spam check results: [_CUSTOMRULES: ], [_INTERNALSPAMASSASSIN: 3:5], [_CYREN: 0,Unknown], [_MESSAGESNIFFER: 0,code:0]
[2021.10.29] 09:25:54.551 [5219604] MxRecord count: '4' for domain 'us.af.mil'
[2021.10.29] 09:25:54.551 [5219604] Attempting MxRecord Host Name: 'pri-usaf-eemsg.eemsg.mail.mil', preference '10', Ip Count: '0'
[2021.10.29] 09:25:54.551 [5219604] Attempting MxRecord Host Name: 'pri-nipr.eemsg.mail.mil', preference '20', Ip Count: '0'
[2021.10.29] 09:25:54.551 [5219604] Attempting MxRecord Host Name: 'sec-nipr.eemsg.mail.mil', preference '30', Ip Count: '0'
[2021.10.29] 09:25:54.551 [5219604] Attempting MxRecord Host Name: 'ter-nipr.eemsg.mail.mil', preference '40', Ip Count: '0'
[2021.10.29] 09:25:54.551 [5219604] Delivery for test@proemail.it to xxxx.yyyy.1.it@us.af.mil has bounced. Reason:
[2021.10.29] 09:25:54.551 [5219604] DSN email written to 5219770 with status failed to xxxx.yyyy.1.it@us.af.mil
[2021.10.29] 09:25:54.551 [5219604] Process delivery status notification step from recipient success. Recipient: [xxxx.yyyy.1.it@us.af.mil], Notify: [success,delay,failure], LastError: [600 ], RanDomainFilter: [False], RanGlobalFilter: False
[2021.10.29] 09:25:54.551 [5219604] Delivery for test@proemail.it to xxxx.yyyy.1.it@us.af.mil has completed (Bounced)
[2021.10.29] 09:25:54.551 [5219604] Removed from RemoteDeliveryQueue (3 queued or processing)
[2021.10.29] 09:25:56.738 [5219604] Removing Spool message: Killed: False, Failed: False, Finished: True
[2021.10.29] 09:25:56.738 [5219604] Delivery finished for test@proemail.it at 09:25:56    [id:5219604]
Gabriele Maoret - Head of SysAdmins at SERSIS
Currently manages 6 SmarterMail installations (1 in the cloud for SERSIS which provides services to a few hundred third-party email domains + 5 on-premise for customers who prefer to have their mail server in-house)

5 Replies

Reply to Thread
0
Gabriele Maoret - SERSIS Replied
10/29/2021 at 4:38 AM
P.S.: i'm on the latest SmarterMail release
Gabriele Maoret - Head of SysAdmins at SERSIS Currently manages 6 SmarterMail installations (1 in the cloud for SERSIS which provides services to a few hundred third-party email domains + 5 on-premise for customers who prefer to have their mail server in-house)
2
Gabriele Maoret - SERSIS Replied
10/29/2021 at 8:20 AM
Marked As Resolution
After several investigations, I found that it is they (the domain managers @something.MIL) who are having problems ...

They basically messed up their DNS so much that they are invisible from both Google's and CloudFlare's DNS (and of course I use 8.8.8.8 and 1.1.1.1 as DNS...)

I noticed it long before them and they even thanked me for reporting it...

Now the situation is returning to normal.
Gabriele Maoret - Head of SysAdmins at SERSIS Currently manages 6 SmarterMail installations (1 in the cloud for SERSIS which provides services to a few hundred third-party email domains + 5 on-premise for customers who prefer to have their mail server in-house)
1
Kyle Kerst Replied
11/1/2021 at 7:44 AM
Employee Post
That's great to hear Gabriele! I reviewed the Delivery logs and it definitely looked to be MX record related, but was interesting it didn't attempt to deliver to the A record at the very least. Either way I'm glad to hear this is working. Have a good one!
Kyle Kerst IT Coordinator SmarterTools Inc. www.smartertools.com
1
Gabriele Maoret - SERSIS Replied
11/1/2021 at 7:57 AM
They didn't try to deliver to the A records because the *.MIL DNS server were so messed up that there aren't A records...
Gabriele Maoret - Head of SysAdmins at SERSIS Currently manages 6 SmarterMail installations (1 in the cloud for SERSIS which provides services to a few hundred third-party email domains + 5 on-premise for customers who prefer to have their mail server in-house)
0
Kyle Kerst Replied
11/1/2021 at 9:39 AM
Employee Post
That would do it! :-D Great find!
Kyle Kerst IT Coordinator SmarterTools Inc. www.smartertools.com
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