I installed Office Small Business yesterday and can send most emails.
However some I get back fro "System Administrator" that state the following
Your message did not reach some or all of the intended recipients.

Subject: FW: Regarding Grace
Sent: 2/17/2007 11:14 AM

The following recipient(s) cannot be reached:

'John Doe' on 2/17/2007 11:14 AM
554 Message refused

The message is only being sent to one person and I have never had problems
before.
I also get the same thing when trying to send a link to someone.
Help would be greatly appreciated.