[Samba] LDAP logins failing after installing Samba 4.4.5

[Bart Coninckx]

>>AD does not allow simple binds, It might help if you told us just what
>>mailserver you are using.
>>
>>Rowland

 
>It's Kopano, formerly known was Zarafa. With version 4.1.13 it seems that simple binds were still possible, but that actually might have been >an error while developers aim to emulate a real AD server. In the meantime I managed to bind with a LDAP browser over TLS or SSL, but >the mailserver still fails in connecting to AD. 
>
> 
>BC
 
If I add 



ldap server require strong auth = no
to smb.conf, things work again. Not ideal, but since Samba and mailserver are on the same host, wiretapping for LDAP passwords is not possible.
I have contacted Kopano for assistance,

BC