Central Active Directory domain and LDAP/LDAPS are being serviced by 3 domain controllers: 

1. CFC.yorku.yorku.ca  
2. LFC.yorku.yorku.ca  
3. MUFC.yorku.yorku.ca  

This note is to inform you that we have been required to take MUFC.yorku.yorku.ca offline at 11:00 a.m. today for unexpected maintenance.  As a result, MUFC.yorku.yorku.ca will remain offline until further notice. 

This event does not impact any services relying on AD DS and AD LDAP/LDAPS, if configured to use the fully qualified domain name of yorku.yorku.ca.  We have communicated several times that it is standard best practice to do so, rather than configuring your services to use individual domain controllers. 

We apologize for the inconvenience this is causing and thank you for your continued support and cooperation.