Are you authenticating with your mail server? Check your ISP's support page
and see what type of authentication you need when sending mail. Then go to
Tools, Account settings in outlook and open the account, then click More
Settings and verify the settings on Outgoing server and Advanced tabs.
http://www.slipstick.com/Tutorials/more/settings.htm
--
Diane Poremsky [MVP - Outlook]
Outlook Tips:
http://www.outlook-tips.net/
Outlook & Exchange Solutions Center:
http://www.slipstick.com/
Outlook Tips by email:
mailto:dailytips-subscribe-(E-Mail Removed)
EMO - a weekly newsletter about Outlook and Exchange:
mailto:EMO-NEWSLETTER-SUBSCRIBE-(E-Mail Removed)
Poll: What version of Exchange server do you use?
http://forums.slipstick.com/showthread.php?t=33803
"Chrisskier" <(E-Mail Removed)> wrote in message
news:30DF55D8-6CD2-40AC-B426-(E-Mail Removed)...
> I cant get my email through to domain recipients - coming up with error
> msg
> 'sorry 553 error. rcpthost not on your allowed list'
>
> Windows 7 Pro / Office Outlook 2007