I seem to be facing a rather strange problem.
I have a server running on Amazon EC2. It's a CentOS server with Plesk. I have filled the form to lift the email sending limit set by Amazon, and have received the confirmation that the limit has been lifted. And yet, postfix can't seem to be able to send any email:
Jun 19 18:37:54 user postfix/smtp: connect to example.com[xx.xx.xx.xx]:25: Connection timed out Jun 19 18:37:54 user postfix/smtp: xxxxxxxxxxx: to=<firstname.lastname@example.org>, relay=none, delay=9084, delays=8934/0.17/150/0, dsn=4.4.1, status=deferred (connect to example.com[xx.xx.xx.xx]:25: Connection timed out)
However, I can send emails without any problem using telnet on port 25.
I'm confused. Any help on where to look or what the issue might be will be more than welcome.