Mail from *.outbound.protection.outlook.* is connecting and disconnecti but does nog deliver email

Discussion in 'Server Operation' started by VeniceITC, Dec 19, 2022.

  1. VeniceITC

    VeniceITC New Member

    Hi All,
    since Tuesday I have a strange problem.
    Mail from *.outbound.protection.outlook.* (Office 365 users) is connecting and disconnecti but does not deliver email.
    Sending from other domains like gmail.*. icloud.* are delivered correctly.
    Does someone has a solution?

    Dec 19 20:06:32 svr04 postfix/smtpd[2419]: connect from mail-vi1eur03on20706.outbound.protection.outlook.*[2a01:111:f400:fe1b::706]
    Dec 19 20:06:32 svr04 postfix/smtpd[2419]: disconnect from mail-vi1eur03on20706.outbound.protection.outlook.*[2a01:111:f400:fe1b::706] ehlo=1 starttls=1 quit=1 commands=3


    Config:
    Ubuntu 20.04 TLS
    Postfix
    Dovecot
    Just a normal ISPConfig3 installation.

    Kind regards,

    Johan
     
  2. till

    till Super Moderator Staff Member ISPConfig Developer

    is this a recent setup that uses Rspamd as mail filter? if yes, log in to the Rspamd interface, maybe it shows you additional details. Might be that rspamd is greylisting this sender domain and if outlook tries to re-deliver from different domains, it will not succeed.
     
  3. VeniceITC

    VeniceITC New Member

    Hi Till,

    Thanks for your fast reply.
    I'm running this setup since June/July
    Amavis, clamav

    Regards,

    Johan
     

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