Hello,
Last week I set up a zimbra server for testing purposes.
When I look at the firewall logs, I see that the server wants to connect to random ports from port 25.
I saw this from the server as well. You can see from the file I attached.
I'm wondering why, shouldn't e-mail servers normally connect to port 25 other than port 25?
Server: Ubuntu 20.04.5 LTS
Thank you.
Zimbra Random Port Connection
Zimbra Random Port Connection
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