how to troubleshoot address book and group expansion in Lync
https://technet.microsoft.com/en-us/library/gg398194.aspx
https://technet.microsoft.com/en-us/library/dn743836.aspx
http://blog.ivangole.com/?p=387
http://www.msxfaq.de/lync/lyncab.htm
How to find which server is having
issue in Lync Group Expansion
Step 1 :
When you replace with fep02 server. You will get below error
as fep02 is having issue.
Step 02:
You can use shell to test same thing as below:
$credential = Get-Credential "bsci\guptaa10"
Test-CsGroupExpansion -TargetFqdn
"lablncpool01.bsci.lab.com" -GroupEmailAddress
"BSCMessagingOffshore@bsci.lab.com" -UserSipAddress
"sip:akshit.behl@bsci.lab.com" -UserCredential $credential
You can replace –TargetFqdn with server name
(labncfep01.bsci.lab.com). Result of
successful and failure attached in below txt file.
Step 03:
Modify host file in C:\Windows\System32\drivers\etc
Add entry lablncint01 with each front end server IP and see
in Lync Client if you are able to expand distribution Group and identify faulty
server.