Unable to Resolve a GAL Entry

[dsbuk]

Have had VB code written for a while that updates a common calendar from the calendar's of the members of a particular Distribution List ("CorpCal"). This has been working across changes from NT to 2000 server & Exchange 5.5 to 2000, with various versions of outlook. I have now encountered a problem with name resolution from the GAL. As a starting point I have 2 User entries in AD called "Fred Bloggs" and "Joe Smith", all set up with valid Exchange mailboxes & accounts. These 2 are members of CorpCal & the calendar update worked fine. I then added a Contact called "Fred (Home)" [First name "Fred", Last name "(Home)"] with a SMTP address. Still no problem. I then added a Contact called "Joe (Home)" [First name "Joe", Last name "(Home)"], also with a SMTP address. Now when the calendar update runs I get "Unable to resolve Joe Smith".

In Outlook (2002 & 2003) I enter "Joe (Home)" & click Check Names & I get the box that asks me to resolve the name manually.

Any suggestions would be welcome.

 

[dsbuk]

Answers to questions

1. There are no other entries in the GAL that start with "Joe"
2. There is only one Exchange server
3. I cannot remove the 2 accounts because they are associated with many security objects
4. There are no duplicate entries in any local contact list

I created an Outlook (2000 SR-1) profile on another PC that connected to my Exchange mailbox but had no Contacts other than the folder in my mailbox and that was empty. I re-ran the program and got the same error