Rec'vng 553 Undlivrble. messg. in newly set-up Outlook. Help, pls

[Michelle Buonfiglio]

Can someone help me, please? Just set up Outlook with my pop3 server.
Downloaded all email. Every time I try to send an email, I get Undeliverable
response w/ following note:

The following recipient(s) could not be reached:

'(e-mail address removed)' on 9/2/2008 4:54 PM
553 sorry, that domain isn't in my list of allowed rcpthosts
(#5.7.1)

Will someone please tell me what I can do to correct this problem? Thanks!!!

 

[neo [mvp outlook]]

The error message is just the mail server saying that it can't relay/forward
the message for (e-mail address removed). Perhaps you have to authenticate to the
SMTP server in order to send e-mail.

 

[Michelle Buonfiglio]

Yes! I think that did the trick! Thanks so much for your help.

Michelle