Problem with postfix allowing remote users ability to send

[schotty]

Hello,

I have an interesting issue where remotely, I cannot use the SMTP server period.

Locally, if I ssh in that is, I can use it fine, but with a remote connection (telnet or Thunderbird), I cannot even see the server as present.

What aside from the obvious issues (firewall, selinux), could be causing me my woes?

Thanks much!
Andrew.