can't reply to email

[NATCAT]

Hi All,

Currently I have ONE user in my organisation that can not send mail that is a reply. However if he creates a new message with the same email address the messeage is sent.

The email recieved in this inbox (from system administrator)reads as follows:

Your message did not reach some or all of the intended recipients

Subject: Voted Best Commercial In Europe
Sent: Thursday, February 15, 2007 8:36 AM

554 One or more recipients failed

Other Facts:
1. the default account is an IMAP account on an Mdeamon mail server.
2. If I login as the user in the webclient I have no problems.
3. Outlook 2003 SP2. All the latest windows updates have been applied.
4. I have repaired the offie 2003 application with the option on the installation CD.

Does anyone have anymore troubleshooting ideas or suggestions on what the problem could be ?
Thanks in advance ;-)

 

[NATCAT]

I also noticed that replying to users in the same domain is not a problem. Its replying to external users that is the problem.

 

[jhaith]

Does the user have any Outlook Rules setup or 3rd party software that would effect message replies?

Can you test the account w/ Outlook Express and if not successful then from another machine? I know you tested via the web client, but this should eliminate some possible causes.

-jhaith

 

[smah]

I would guess at a corrupt nickname cache

http://support.microsoft.com/kb/287623