553 error (not in rcpthosts list)

Giganews Newsgroups
Subject: 553 error (not in rcpthosts list)
Posted by:  Alex Trejo (alex.tre…@tttnet.com.mx)
Date: Thu, 29 Sep 2005

I built a module to send an automated mail to email users, using a IdSMTP
and IdMessage component.
The destination addresses are valid. The smpt host is not the server where
the app is running, but allows smtp relay. When trying to send, I get "553:
domain is not in my rcpthost list". What is missing?