I installed cpanel on a new server, so exim is included. As my provider blocks port 25, I added port 587 (according to the ISP recomendation), to the "Allow exim to listen on port " setting.
I can receive messages sent to any email created on the server, but no way to send messages out of the server. They go to the Queue and stack there.
There are the logs, of when trying to send an email to a gmail address.
LOG: MAIN cwd=/usr/local/cpanel/whostmgr/docroot 4 args: /usr/sbin/exim -v -M 1UQguD-0005bE-74 delivering 1UQguD-0005bE-74 Connecting to gmail-smtp-in.l.google.com [2607:f8b0:4002:c04::1a]:25 ... failed: Network is unreachable LOG: MAIN gmail-smtp-in.l.google.com [2607:f8b0:4002:c04::1a] Network is unreachable
And this, trying to send to hotmail.
LOG: MAIN mx2.hotmail.com [22.214.171.124] Connection timed out Connecting to mx2.hotmail.com [126.96.36.199]:25 ... failed: Connection timed out (timeout=5m) LOG: MAIN mx2.hotmail.com [188.8.131.52] Connection timed out
Where Am I wrong?