Postfix on dynamic IP

[edeiten]

I have a LAMP web server working behind a dynamic IP address. I have installed postfix, and it seems to be working, but I can not send email. When I try to send mail from the command line, the mail log shows:

Jul 27 20:56:26 <server name> postfix/pickup[8873]: 744138001C5: uid=0 from<root>
Jul 27 20:56:26 <server name> postfix/cleanup[9049]: 744138001C5: message-id=<....>
Jul 27 20:56:26 <server name> postfix/qmgr[8874]: 744138001C5: from=<root@...>, size=627, nrcpt=1 (queue active)
Jul 27 20:56:26 <server name> postfix/qmgr[8874]: 744138001C5: to=<erich@...>, relay=none, delay=0,05 delays=0.04/0.01/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to .....: connection timed out)

I am attempting to send an email from MY mail server to an outside, 3rd party, known good mail server and the connection times out.

Also...what is mynetworks? What does this need to be set to? that is the number after the slash (i.e 127.0.0.0/??)

Thanks,

 

[jkupski]

Verify that your ISP is not blocking port 25 outbound.