[SOLVED] IMAP Aliases

Hi Forum, We use Horde email on our Clarkconnect 4.1 (rhel4).
I have just created a new email user via the gui and all works well with aliases setup so emails to fn.ln@... are directed to username.
We also have an alias for sales@... directed to two emails but this was setup by our Linux expert who has moved on.
I used the gui to also do this and it failed. I think due to the prior setup catching the emails first.
Where would the techie have setup our "sales" alias ?? Should I look for a file somewhere??
I would like to remove the earlier alias so my gui action will work as I want the emails directed to other users as well. Tested other aliases and they all work,just the conflict with the earlier one appears to be the issue.
Appreciate some advice on where to look. regards, Bill:confused:

Resolved.. I finally tracked down a file /etc/postfix/virtual. Edited the file and then foundout you have to run something to update the virtual.db.:D
All works fine now. Why use virtual when aliases also does the job??:confused: