smtp to 371.net

[Rick Lu]

hello, every one

My mail server is qmail and it plays well. But I can not send any mail to 371.net 
which has three mx server and one smtp server.

mx2.371.net
mx3.371.net
mx4.371.net

smtp.371.net

on its website, I got to know that smtp.371.net is recommended. but I can not connect 
to this server by telneting its 25 port. Can anyone give me a hand? Or is there any 
other method by which mail servers can communicate with each other? 

Thanks a lot.

            Rick Lu
            [EMAIL PROTECTED]