Checking your outgoing mail server (Is Port 25 blocked?)

Checking your outgoing mail server (Is Port 25 blocked?):

'via Blog this

In a comment Prompt:
telnet example.com 25

or

telnet example.com 587


If unblocked...
220 cl34.gs01.gridserver.com ESMTP Exim 4.63 Tue, 24 Jun 2008 13:45:04 -0700
If blocked...
Trying 64.13.192.208... telnet: connect to address 64.13.192.208: Connection refused telnet: Unable to connect to remote host