What is PTCL's SMTP Server and Port


Can anyone tell me the SMTP server / port of PTCL. I am using PTCL broadband and my outgoing mail is stopped which was working perfectly fine with Wateen. An early response is requested.

By the way smtp.ptcl.net @port 25 is not working

i think PTCL wireless is not quick as like PTCL land line, and now also the PTCL is providing the 50 MB of speed but i dont know the monthly charges of the fifty MB of dsl