Windows
Press Start->Run
type telnet smtp1.arin.net 25 (press enter)
Linux
type telnet smtp1.arin.net 25 (press enter)
if you get back 220 smtp1.arin.net . . . your ISP DOES NOT block port 25
if your connection hangs, fails, or returns somethign other than smtp1.arin.net then your ISP is blocking or redirecting port 25 to their own server, and you should consider using our service
we use Bell Nexxia...our ISP does not block port 25