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Thread: [SOLVED] Postfix don't accept NAS alert emails

  1. #1
    owl700 is offline Active Member
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    Default [SOLVED] Postfix don't accept NAS alert emails

    Hello, I bought a new NAS and want to allow it to send email alert in my zimbra email.
    If I omit authentication postfix refuses to send the test message because the NAS hostname is not FQDN, then i have created a new email account for NAS and inserted authentication data into it but postfix refuse to accept the test message with only this output:

    May 9 00:39:52 mail postfix/smtpd[21780]: connect from unknown[192.168.0.201]
    May 9 00:39:52 mail postfix/smtpd[21780]: lost connection after EHLO from unknown[192.168.0.201]
    May 9 00:39:52 mail postfix/smtpd[21780]: disconnect from unknown[192.168.0.201]

    what's wrong?

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
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    You need to check your Protocol Checks in the Admin UI settings.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    owl700 is offline Active Member
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    zimbraMtaRestriction: reject_invalid_hostname
    zimbraMtaRestriction: reject_non_fqdn_hostname
    zimbraMtaRestriction: reject_non_fqdn_sender

    If i use auth, MTA Restrictions are always valid? I don't think so.

    I don't understand because the email wasn't send

  4. #4
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    LMStone is offline Moderator
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    A lot of devices that send email don't do so in an RFC-compliant way and so get blocked by Zimbra's (and other systems') anti-spam configurations.

    If the IP of the NAS won't ever change, you can add 192.168.0.201 to the MTA Trusted Networks: entry on the MTA tab of the MTA servers' Server page in the Admin Console.

    Hope that helps,
    Mark

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    owl700 is offline Active Member
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    Thanks i have solved with Trusted Networks, do you know if there is a log where i can look for this non RFC information sent from the NAS?

  6. #6
    LMStone's Avatar
    LMStone is offline Moderator
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    Quote Originally Posted by owl700 View Post
    Thanks i have solved with Trusted Networks, do you know if there is a log where i can look for this non RFC information sent from the NAS?
    The reason for the reject will be in zimbra.log from before you added the NAS to MTA Trusted Networks. Feel free to post the log snippets here if you need help interpreting the log entries.

    Hope that helps,
    Mark

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