First if all, thank you for this free product , it made my life easier as an IT passionate

After reading some of the posts I managed to set up my recipient check against my LDAP server but there is a small issue maybe ? Or maybe my linux
knowledge is old and rusty...
Question:
1. Possible to add 2 , 3 , 4 LDAP hosts instead of only one ?
Thanks in advance.
Edited because of my stupidity
