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Quesiton about exim_mainlog, is this a port number?

Discussion in 'E-mail Discussions' started by jols, Feb 20, 2013.

  1. jols

    jols Well-Known Member

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    Hi,

    In the following log entry:

    2013-02-20 15:17:19 SMTP connection from [1.55.37.113]:21775 (TCP/IP connection count = 7)


    ... Is ":21775" a port number? In other words, are they able to connect some how to send email on a high number port like this?

    As far as we know, we only have port 25 open for SMTP connections, but now I am starting to wonder.
     
  2. quietFinn

    quietFinn Well-Known Member

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    It's the port number in the sender's end.
    The port they are connecting to must be 25 (or 26 if configured so).
     
  3. jols

    jols Well-Known Member

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    Thanks very much. I've been trying to find an answer to that one for well over a year now. Thanks very much again.
     
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