[LUAU] help on port 25

[goku ball z]

hay guys..... I have a funny problem and I just can't figure out.  
  I just installed open suse 10.2 
  here is my problem on the suse box to test to see if port 25 is working i did the following
   
  telnet localhost 25   and it worked BUT..... when I did the following 
   
  telnet domain.com 25  I got connection refused.    
   
  I check the services, dns and everything I can think of.... can someone point me in the right direction?
   
  thanks
  goku

 __________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com