Lync Server 2010 uses several methods of authentication: Kerberos, NTLM, and certificate based.
Kerberos is the default authentication method and successful authentication results in the client receiving a Kerberos ticket that's good for 10 hours.
This is also a good starting place when a user says Outlook has stopped sending and/or receiving email.
Often, the user has accidentally disabled the feature without realizing it.
Note : The behavior is continued to be seen even when a Custom Filter is defined in LDAP syntax in the box provided .
It's quite common for companies to disable user accounts in Active Directory, rather than delete them, when a user leaves the company.
This allows other IT staff and managers to access that user's data and email after they are gone.
Step 3: The new version of the GAL will now be downloaded.
A status window will open to indicate that the download is in progress and will close automatically when the download is complete.