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Bounced emails in MTA?

Crazybeaver

Hi,

I'm using our Sophos XG210 as spam protection for around a week now, coming from Sophos Central email protection.

Everything works fine except for a few bounce mails. These emails are bouncing but I don't really know why, I haven't really found a way to dig any deeper too. I've already whitelisted the domains+IP's of the senders but they still get bounced.

Does anyone have a suggestion for me?



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  • 0 in reply to FloSupport

    Thank you. Already openend a support case.

    Waiting for the output of the logs now after I receive new mails that bounce back.

  • 0 in reply to Crazybeaver

    This is what I can see in the log for one of the bounced e-mails.

    ADMIN Mar 23 10:52:21 [0xc00032f8]: SRC: * ,FROM: *, SUBJECT: *, MAIL_ID: *  Accepted by Device

    ADMIN Mar 23 10:52:26 [*]: [*] FROM = *, TO = *, SUBJECT = *, recv_time = Mar 23 10:52:21, size = 428657, status = Bounced,reason = SMTP Failure in DATA command.

    ADMIN Mar 23 10:52:26 [*]: [*][*] R=MX h=* SSL=0

    ADMIN Mar 23 10:52:26 [*]: [*] FROM = , TO = *, SUBJECT = Delivery Failure Notification, recv_time = Mar 23 10:52:26, size = 100778, status = Bounced,reason = Mail has been discarded from device after multiple failed delivery attempts., fwd_time = Mar 23 10:52:26

    *=hidden data

  • 0 in reply to Crazybeaver

    Fixed

     

    The Exchange server bounced the emails back to the Sophos, it was in the content filtering of the Exchange server.

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