Thanks alot for your response!
No, i am more comfortable with Portuguese, but i feel that my english is not Bad.
Yes, i installed SP2 on exchange 2003 and after words no email could go out.
So the configuration still the way it was, while before it was working perfectly.
The services a running no they is nothing on event long.
so i was thing on running again the service pack 2 to see if i did not miss nothing on there. i dont know if it will not crash my system at all.
One more time thank you, expecting your answer