Problem sending emails in 2003

[SteveDude]

I get this message in returned emails in Outlook 2003,
even though the I the peron is on my safe lists.

553 sorry, that domain isn't in my list of allowed
rcpthosts (#5.7.1)

I can send mail fine in Outlook express. I have several
email accounts including a dial up one. When I use my
dial up account the mail also sends fine, it is my
direcway account that is the problem, but they say since
it sends fine in Outlook Express it is not their problem
it is a problem with Outlook.

I also never had this problem until I upgraded from the
beta to the final version of 2003.

Any help would be appreciated.

 

[Jeff Stephenson [MSFT]]

You probably need to set up authentication to your outgoing server. To do
so, click "More Settings..." on your account, then go to the "Outgoing
Server" tab.