Dec 02, 2007 - 09:23 AM
(with some server side spam blocking programs, sending them an email may automatically add them to the server's "White list")
otherwise, they may be sending them through a relay and failing validation. they may even be typing your address incorrectly. could you please post the error message in their return email? it has a lot of useful info on how to diagnose this.
Mar 04, 2009 - 06:02 AM
The Quomon Team