outgoing traffic on high tcp ports?

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chris
Posts: 4
Joined: 16 Jan 2015 08:31

outgoing traffic on high tcp ports?

Post by chris » 03 Sep 2019 09:04

We are running EFA (3.0.2.6) as an outgoing/incoming smtp server. Noticed that our server tries to connect on high tcp ports to external smtp servers.

eg tcp 22638, 32287, 41298, 41815, 55142, 58159, 54033 is this normal behaivor? We have looked at three different setups and found the same strange use of high tcp ports?

First i have an accept from our smtp server to external smtp server on port tcp/25 allow
Later I see drops from our smtp server to same external smtp server on port tcp/41815 drop (three retries)

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