Hello, so I installed my Mail-in-a-Box a while ago. I wanted to secure it a bit more because all my ports are open right now, so I wanted to know what ports are required to be opened for it to work.
I’m guessing it’s:
Inbound:
SMTPS (465)
SMTP (25)
IMAPS (993)
IMAP (143)
SSH, of course (22)
Outbound:
SMTPS (465)
IMAPS (993)
Am I correct?
Thanks in advance,
RektibouCaribou.
The firewall should be configured for you be default. It’s checked during the status checks. You can manually confirm by running ufw status.
$ ufw status
Status: active
To Action From
-- ------ ----
22 ALLOW Anywhere
53 ALLOW Anywhere
25/tcp ALLOW Anywhere
587 ALLOW Anywhere
993 ALLOW Anywhere
995 ALLOW Anywhere
4190/tcp ALLOW Anywhere
80 ALLOW Anywhere
443 ALLOW Anywhere
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Thanks a lot!, and I just realized that I didn’t know how to read because it’s written on the Setup Guide
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