Some emails I send are rejected by the recipients email server. I receive an email which states that my email was undeliverable.

This is the error message...
553 sorry, that domain isn't in my list of allowed rcpthosts

What causes this and what can I do? (I use Outlook 2003.)

Alex Young, December 2004

have you tried to email them outside of using your outlook? Like using your isp's webmail.. or using a hotmail/yahoo account? I would suggest trying that to see if it is a problem on their behalf first...

please post again once you try that so we can try to help more!

Misty, January 2006