[SOLVED]Cannot connect to SMTP remotely

[brianhill1980]

Hi there,

I'm having a bit of a time getting my SMTP server running. I'm using Postfix.

The problem I'm having is remote clients cannot send mail through the server even though they have a valid email address on the server.

Things I can do:
- ping server's ip
- ping server's domain
- Receive IMAP messages using webmail and software
- Send mail through webmail
- Use ssh to connect to server then telnet into SMTP server

Things I CAN'T do:
- telnet into SMTP server for testing from remote pc
- Send mail using software on remote pc (Mail.app, Thunderbird, Outlook, iPhone)

Problems encountered:
- When I try to telnet into the server from a remote computer (telnet brianhillphotography.ca 25) it times out. When I try to telnet from an ssh terminal connected to the server it works.
- Trying to send mail from anywhere but the webmail results in an error saying the server could not be contacted.

Things I've tried:
- Checked configuration of main.cf and master.cf. Settings look to be correct.
- Ran 'dpkg-reconfigure postfix'. Same issue's occuring.


I have a firewall running on the server, but TCP port 25 is open. I've also tried disabling the firewall and I get the same result. Not able to connect. It's like Postfix is rejecting any connections from remote addresses, but I can't figure out why.

Any help would be appreciated. Thanks!