Hi Dicko, here’s more info.
Oct 5 21:05:30 pbx postfix/postfix-script[24487]: refreshing the Postfix mail system
Oct 5 21:05:30 pbx postfix/master[3619]: reload – version 2.10.1, configuration /etc/postfix
Oct 5 21:05:44 pbx postfix/pickup[24492]: D3879100D1037: uid=995 from=<asterisk>
Oct 5 21:05:44 pbx postfix/cleanup[24532]: D3879100D1037: message-id=<20191006040544.D3879100D1037@pbx>
Oct 5 21:05:44 pbx postfix/qmgr[24493]: D3879100D1037: from=<asterisk@mdomain.com>, size=470, nrcpt=1 (queue active)
Oct 5 21:05:47 pbx postfix/smtp[24534]: D3879100D1037: to=<destination@domain.com>, relay=smtp.office365.com[40.97.116.82]:587, delay=2.8, delays=0.14/0.01/2.2/0.45, dsn=5.2.0, status=bounced (host smtp.office365.com[40.97.116.82] said: 554 5.2.0 STOREDRV.Submission.Exception:SendAsDeniedException.MapiExceptionSendAsDenied; Failed to process message due to a permanent exception with message Cannot submit message. 0.35250:0A00F085, 1.36674:0A000000, 1.61250:00000000, 1.45378:02000000, 1.44866:EC1D0000, 1.36674:0E000000, 1.61250:00000000, 1.45378:F11D0000, 1.44866:1C010000, 16.55847:510E0000, 17.43559:0000000004020000000000000000000000000000, 20.52176:140F17891500101043050000, 20.50032:140F17898617000000000000, 0.35180:48050000, 255.23226:0A000786, 255.27962:0A000000, 255.27962:0E000000, 255.31418:0A009886, 0.35250:0A000000, 1.36674:0A000000, 1.61250:00000000, 1.45378:02000000, 1.44866:8E000000, 1.36674:32000000, 1.61250:00000000, 1.45378:93000000, 1.44866:01000000, 16.55847:FA000000, 17.43559:0000000000030000000000000100000000000000, 20.52176:140F1789150070200A00EC86, 20.50032:140F1789861710106B050000, 0.35180:0A00ED86, 255.23226:4800D13D, 255.27962:0A000000, 255.27962:32000000, 255.17082:DC040000, 0.27745:75050000, 4.21921:DC040000, 255.27962:FA000000, 255.1494:7A050000, 0.38698:0F010480, 0.37692:01000000, 0.37948:13000100, 5.33852:00000000534D545000000100, 7.36354:010000000000010913000100, 4.56248:DC040000, 7.40748:010000000000010B0F010480, 7.57132:00000000000000000F010480, 1.63016:32000000, 4.39640:DC040000, 8.45434:DB2E5F875AEAE84BB7E3C786630CD72F0F010480, 5.10786:0000000031352E32302E323332372E3030343A5951425052303130314D42303733393A34383437303939612D616639392D346332612D383064632D333961336137396561326338000F010480, 7.51330:48DAAC77124AD7080F010480, 255.1750:AC050000, 255.31418:0A00D587, 0.22753:0A00F136, 255.21817:DC040000, 4.60547:DC040000, 0.21966:0A00F636, 4.30158:DC040000 [Hostname=YQBPR0101MB0739.CANPRD01.PROD.OUTLOOK.COM] (in reply to end of DATA command))
Oct 5 21:05:47 pbx postfix/cleanup[24532]: 9C4FC100D109A: message-id=<20191006040547.9C4FC100D109A@pbx>
Oct 5 21:05:47 pbx postfix/bounce[24536]: D3879100D1037: sender non-delivery notification: 9C4FC100D109A
Oct 5 21:05:47 pbx postfix/qmgr[24493]: 9C4FC100D109A: from=<>, size=5900, nrcpt=1 (queue active)
Oct 5 21:05:47 pbx postfix/qmgr[24493]: D3879100D1037: removed