URGENT help required...please!

[#1]

I have set up ann additional mailbox in my account.
I tested it by sending an email to my work (works fine)
I tested it by sending an email to new mailbox (works fine)
But when i try to 'REPLY' to the message sent from my new mailbox  - Delivery has failed to these recipients or distribution lists:
*******@****.plus.net
The recipient's e-mail address is invalid. Microsoft Exchange will not try to redeliver this message for you. Please check the recipient's e-mail address and try resending this message, or provide the following diagnostic text to your system administrator.

QUICK FIX ANYONE - ITS IMPORTANT
[Moderator's note by Jim (Oldjim)  email removed

[#2]

Try *******@*****.plus.com
[Moderator's note by Jim (Oldjim)  email removed

[#3]

HAHAHAHAHAHAH, what an absolute muppet
Never mind its long weeken time, woop woop!!
Thanks Dude 

[#4]

You may wish to edit your posts gentlemen and replace the specific identites in the e-mail addresses with generic ones, otherwise spam may be a problem!

[#5]

jim:post As the problem is solved I have removed the email addresses mod:end

[#6]

problem is back.
i set it up and works perfectly in Outlook.
But outlook express is failing. Think its a ticket issue this time though !!!

[#7]

I wouldn't have any great faith in Outlook express...
Have you tried using Thunderbird, ideally as IMAP - the visual interface is quite similar.

[#8]

Surely if the settings are all right it should work.
Will try thunderburd though

[#9]

I have been using OE for years with no real issues. Most of the time problems have been due to servers not being found/available.