451 4.3.5 Server configuration error;

Discussion in 'Server Operation' started by RobPatton, Nov 3, 2017.

  1. RobPatton

    RobPatton New Member

    I've had a system running for about a year, and every so often, I get an (incoming) email that just CAN'T get through the system for some vague reason.
    The error I see is:

    Nov 1 11:44:00 webhost postfix/smtpd[22189]: NOQUEUE: reject: RCPT from mail-cys01nam02on0089.outbound.protection.outlook.com[104.47.37.89]: 451 4.3.5 Server configuration error; from=<[email protected]12.fl.us> to=<[email protected]> proto=ESMTP helo=<NAM02-CY1-obe.outbound.protection.outlook.com>

    The weird part is that I can get other emails from other users at the same host, but this vague error from a handful of source emails.
    Logs dont tell (me) much I guess the only lead I have is "warning: unknown smtpd restriction: "OK"" and I dont begin to know what points at. Have included th main and master in hopes that someone with a bigger brain than might notice what I've done wrong.



    Nov 1 11:44:00 webhost postfix/smtpd[22189]: connect from mail-cys01nam02on0089.outbound.protection.outlook.com[104.47.37.89]
    Nov 1 11:44:00 webhost postfix/smtpd[22189]: NOQUEUE: filter: RCPT from mail-cys01nam02on0089.outbound.protection.outlook.com[104.47.37.89]: <[email protected]12.fl.us>: Sender address triggers FILTER amavis:[127.0.0.1]:10026; from=<[email protected]12.fl.us> to=<[email protected]> proto=ESMTP helo=<NAM02-CY1-obe.outbound.protection.outlook.com>
    Nov 1 11:44:00 webhost postfix/smtpd[22189]: warning: unknown smtpd restriction: "OK"
    Nov 1 11:44:00 webhost postfix/smtpd[22189]: NOQUEUE: reject: RCPT from mail-cys01nam02on0089.outbound.protection.outlook.com[104.47.37.89]: 451 4.3.5 Server configuration error; from=<[email protected]12.fl.us> to=<[email protected]> proto=ESMTP helo=<NAM02-CY1-obe.outbound.protection.outlook.com>
    Nov 1 11:44:00 webhost postfix/cleanup[21915]: 5A4334251F7B: message-id=<[email protected]>
    Nov 1 11:44:00 webhost postfix/smtpd[22189]: disconnect from mail-cys01nam02on0089.outbound.protection.outlook.com[104.47.37.89]
    Nov 1 11:44:00 webhost postfix/qmgr[8096]: 5A4334251F7B: from=<[email protected]>, size=976, nrcpt=1 (queue active)
    Nov 1 11:44:00 webhost postfix/local[22846]: 5A4334251F7B: to=<[email protected]>, orig_to=<postmaster>, relay=local, delay=0.02, delays=0/0.01/0/0.01, dsn=2.0.0, status=sent (delivered to mailbox)
    Nov 1 11:44:00 webhost postfix/qmgr[8096]: 5A4334251F7B: removed
     

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    Last edited: Nov 3, 2017

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