Connection timed out (os error 110)

[danilotalice]

Hi, I installed the server (smtp - imap - jmap) and when I try to send an email, the Connection timed out error appears (error 110).

Remembering that it is installed on an Amazon EC2 instance, and the main email ports are free (25, 465, 143, 993, 587, 8080, 4190).

Can anyone help me?

[mdecimus]

Some providers block outgoing connections on port 25 to prevent abuse. You need to open a ticket to request SMTP outgoing access.

[danilotalice]

Can I up the server only with port 465?

[mdecimus]

Yes, but you won't be able to receive emails from other domains. Also, be aware that some providers block both incoming and outgoing connections to port 25.