Quesiton about exim_mainlog, is this a port number?

jols

Well-Known Member
Mar 13, 2004
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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.
 

jols

Well-Known Member
Mar 13, 2004
1,110
3
168
Thanks very much. I've been trying to find an answer to that one for well over a year now. Thanks very much again.