Unable to send using Address book

[naiku]

Hi, I am completely stuck and need some help, I am using Outlook XP but for some reason am unable to send emails when I select someone from the address book. If I type in the full email address manually then it will send with no problems, but if I select that same person from the address book the email is returned with the error message:

"None of your email accounts could send to this recipient"

I have tried deleting the entry from the address book and then entering again, but no luck at all. This happens for every email address that I try. I use a small LAN and send via "PostCast Server" but also tried sending directly through my ISP's outgoing server (connected PC direct to the internet) I don't have this problem on any of the other PC's and am stuck as
to what else to try .

If anyone needs any more information let me know (not sure what else to provide)
Thanks in advance.

 

[smah]

Right click on Contacts, Properties, Outlook Address Book tab, make sure 'Show this folder as an e-mail address book' is selected.

 

[naiku]

Thanks for the reply, I checked out what you said and the box was already ticked. Any other idea's?

 

[smah]

I wouldn't expect this to be the problem, but it won't hurt to clear the nickname cache

http://support.microsoft.com/default.aspx?scid=kb;en-us;287623