CentOS 6.6 Final on OpenVZ VPS unable to connect to SMTP

I've installed Centos-webpanel on an OpenVZ VPS with pretty much no issues other than I am unable to connect to SMTP on ports 25, 465, or 587. Telnet to mydomain.com port # returns a 421 error code.  Telnet to mydomain.com 143 returns a successful result just the outgoing smtp is an issue. I have verified dovecot is running  and ports 25, 465, and 587 are open and listening.
Has anybody else had this problem? I submitted a support request to CWP and the response was the obvious of make sure the ports are open and listening and dovecot is running.

Just to add to this, I've reinstalled the os on this VPS multiple times just to make sure it wasn't a problem with CentOS 6 and this problem continues to exist, I follow the install directions to the T on this and everything works fine EXCEPT for outgoing mail, I can't connect to outgoing smtp period. I've contact support for the VPS and they insist it's the web panel and no ports are blocked.

Hi
im sure you tried , but did you test after stopping iptables , and does your vps have any additional firewall like the Parallels panels sometimes do , also was the server install a minimal install or is there a chance the template contains postfix already ?

also what do you get in tail -f /var/log/maillog ?

also, have you checked if your mail server is running on the specified ports ?

example command for port 25

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netstat -tulpn|grep 25
you should get something like:

# netstat -tulpn|grep 25
tcp        0      0 127.0.0.1:10025             0.0.0.0:*                   LISTEN      763/master
tcp        0      0 0.0.0.0:25                  0.0.0.0:*                   LISTEN      763/master