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My vps blocks port 25 and I can't send emails, I receive normally. How do I change port 25 to another port that I can send emails to. Thanks.
KeyHelp 21.3
Ubuntu 20.04
Roundcube

Hallo,

for sending mails you can use port 587 that is active by default

Florian wrote: ↑Mon 14. Feb 2022, 12:56 Hallo,

for sending mails you can use port 587 that is active by default

Thanks for the reply my friend. How do I leave only port 587 for sending emails?

Hallo,

Port 25 must always be open because mailservers communicate via this port.

Solved. Hetzner enabled port 25 and it is working now. Thanks.