We are facing urgent problem in our exchange 2013. Every thing was working fine when we leaved from office yesterday. but today after restart our AD servers exchange stop working. Appreantly every thing is ok. All databases are mounted and are helthy state. Yesterday we configured NLB over CAS1 server. After that it was working fine. ECP and OWA are also not working.
Please help us where to start troubleshooting. We checked all required parameters but unable to find any clue of this problem