outlook connector and email aliases

Hi,

We are using JES5 with the latest outlook connector (7.2.402.1)
The user accounts have mailalternateaddress entries that consist of their 
initials. (e.g.hda-9IKiO1iGCm/QT0dZR+AlfA@xxxxxxxxxxxxxxxx)
the uid is the same as their initials (ie uid=hda)

the main 'mail' attribute is made of firstname.lastname, ie 
'heidi.alloos-9IKiO1iGCm/QT0dZR+AlfA@xxxxxxxxxxxxxxxx'

In the UWC we are able to type 'hda' in the to: field or 'heidi.alloos', 
when we click 'send' the @domain.com is added and both mails arrive. 
In the outlook connector, I need the same feature but there, i am only 
able to use heidi.alloos<enter>

When I try to type 'hda' , outlook says 'microsoft office outlook does not 
recognize 'hda', probably because this entry is - by default - nowheree to 
be found in the global address list 

Is there a way to obtain the same result in outlook, possibly by tweaking 
some of the entries in the LDAP tab in the outlook connector deployment 
tool ? When I go to the addressbook in outlook, and perform a find based 
on the alias field, it does find the user, so somehow outlook should be 
able to find it rightaway, yes ?

kind regards,
Tom.