[Lionel]

Originally Posted by Klug

The issue relies in the "external GAL", I've seen it elsewhere yesterday.

Here for example, someone with the same problem (with Zimbra 4.5.3) : gal search issue

Lionel, what external GAL are you using (LDAP, AD, stg else) ?
What are the search/filter parameters you've used while setting up the external GAL ?

I'm using LDAP external GAL.

Here my GAL config :
LAG mode: Externe
Max results : 10000 (an unsuccessful test )
Server type : LDAP
LDAP filter:
(&(|(cn=*%s*)(sn=*%s*)(givenName=*%s*)(mail=*%s* )) (objectclass=inetOrgPerson)))
Autocomplete :
(|(cn=%s*)(sn=%s*)(givenName=%s*)(mail=%s*))