I have 2 users that can not sent email to internal users unless they go to the address book, select Novell GroupWise address Book and select from there.

I have even tried to highlight the user in the novell groupwise address book, right click, Copy to Frequent Contacts. You then use that address and the email will show "pending", then "transfer delayed" and then "trasfer failed" Looking at the address it is the same as what is in the novell groupwise book. Other users are not having this problem so I assume it is not a setup issue with c1