We were using ma bell dsl before. Everything worked great.
Yes, I have a split DNS setup. There is a firewall in between our mail server and router. Yes, it worked fine before the switch.
yes, we have a PTR record setup.
I can send mail to some domains. When I try sending to a major ISP, the connection times out. The client has a lot of customers who use AOL and trying to send mail to AOL, times out.
I've tried connecting to their mail server via terminal and it just times out as does a ping.
Please help me troubleshoot this issue.