Why is this happening?

[SueL]

I'm new to Outlook Express and was getting along fine until yesterday!
I sent three separate emails to people who I email on a regular basis, they
all replied (with my original email still showing) and I replied to them
(with both previous emails showing). I then received three emails from my
Mail Delivery System, Subject "Delivery Status Notification (Failure)"
When I opened each email, it said that the email was undeliverable and the
reason for the problem was:-

5.1.0 - Unknown address error 550 - "Rejected"

I haven't been able to find out why this is happening and it is driving me
nuts!

Please, please can somebody help me!

Thanks

 

[Gordon]

I'm new to Outlook Express

This newsgroup is for support of Outlook
97/98/2000/2002/2003/2007 from the Office suite of products. Outlook
Express is actually a separate program despite the similar name.

For help with your OE questions, try an OE newsgroup such as
microsoft.public.windows.inetexplorer.ie6_outlookexpress (for OE 6), or
an OE help website such as http://insideOE.tomsterdam.com. If you're
accessing the Microsoft newsgroups through the MS Product Support
Services "Community Newsgroups" web interface, click
http://www.microsoft.com/communitie...px?dg=microsoft.public.outlookexpress.general
Good luck!

 

[SueL]

Thanks Gordon. I'll try my luck with one of the groups you suggest.