qmail-smtp: ok from linux, deny from windows client

[Claudiu Balciza]

I have qmail 1.03
I can send mail to outside from linux
I can get mail through pop3 from windows
I can email to myself from windows
I cannot send out mai from windows

the server rejects the outer address with "553 sorry, that domain isn't in
my list of allowed rcpthosts"

what am I missing ?

TIA
Claudiu