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Why does the MTA attempt to deliver IPv6 mail on port 24

rfcat_vk

My test XG has a IPv6 and 4 enabled. It quite happily sends mail out on port 25 using 'IPv4' addresses but tries to use port :: :24 for IPv6 deliveries.

I think I found out why and that is the way XG handles IPv6, not very well.

Ian



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  • 0 in reply to rfcat_vk

    Here is a screen shot of the same command on an XG not running MTA

     

     

    Ian

  • 0 in reply to rfcat_vk

    Ian,

    I am running Xg as transparent proxy at home. In production I am not using MTA because it lacks of features set.

    So the difference is with MTA mode.

    or could spend some words on this.

  • 0 in reply to lferrara

    Hi folks,

    more testing results.

    Changed mail to transparent proxy. Still unable to send from mac or XG. Restarted XG, no affect on mail sending. Disabled SMTP checking in mail rule was able to send from mac. Enabled smtp check in mail rule unable to send from mac. Restarted XG and mail client, success from mac, but not from XG which is still using :: :24 for reports etc.

    At this stage the choices are wait for V17b or rebuild the XG to get mail reporting to work.

    Ian

  • 0 in reply to rfcat_vk

    Hi folks,

    another strange twist. Outgoing mail is now frozen and listening on port :: :0.

    Ian

  • 0 in reply to rfcat_vk

    Ian,

    I am using MAC too and SMTP email is working with no issue on 465 port.

    SFVH_SO01_SFOS 16.05.7 MR-7# netstat -lnptu | grep -E "464 |24 |25 "
    tcp        0      0 0.0.0.0:464             0.0.0.0:*               LISTEN      2426/awarrensmtp    
    tcp        0      0 127.0.0.1:24            0.0.0.0:*               LISTEN      2465/awarrenmta     
    tcp        0      0 0.0.0.0:25              0.0.0.0:*               LISTEN      2426/awarrensmtp    
    tcp        0      0 :::464                  :::*                    LISTEN      2426/awarrensmtp    
    tcp        0      0 :::25                   :::*                    LISTEN      2426/awarrensmtp    

    This is the outout of XG acting in transparent mode.

  • 0 in reply to lferrara

    Hi Luk,

    my main XG does not have a problem, it is the XG I built to test IPv6 which used MTA by default. I have changed the mail back to transparent proxy and no outgoing mail.

    I am waiting for v17b before deciding on a rebuild from scratch and not use MTA or just using the v17b overwrite. Time and testing will tell.

    Ian