I have given up on SBS 2011 POP3 and setting up Mx Logic. Inbound tested fine. However I am having issues with the smart connector. I have domain.com.outbound15.mxlogic.net as the smarthost. However I am getting 451 4.4.0 Primary target IP address failed along with 421 4.2.1 unable to connect:
1) I can telnet a successful email
2) I have port 25 open
3) I have the external IP address setup on my firebox
4) I have my external ip address setup with Mcafee (mx logix)
Is it possibly a DNS issue?
Thanks again for the time. Our email is completely down so thanks again in advance for the help.