Few users unable to join meeting from external domains
Hi Experts, I have a strange situation in my Lync 2010 enterprise environment. I have 2 Lync 2010 pools and I am in process to move all users from 1st pool to 2nd pool and decommission old pool. This is being done due to data center migration. I have 6 frontend Servers (FE1 - 6) in new pool. After moving around 500 users to new pool I noticed that many users are unable to join meetings which were sent by external vendors. However this is working fine if user moved to 1st pool and user is able to join . User connected to FE1 and FE6 are able to join from new pool too but users from other 4 servers are unable to join. I am not getting any relevant logs on server or in UCCP logs. User is getting notification when trying to join meeting that "Conferencing service did not responded." Those users are able to join all other meeting within our domain and problem area is only meeting invites from external domains. We have different CA certificates in both pool but root and intermediate are imported in both pools from both CA and we are facing no problems in communication between both pools. Please help me as I am not getting much help from internet. Thanks in advance.
July 9th, 2015 10:53am

Hi,

Try to restart Edge Server and then test the issue again.

Best Regards,
Eason Huang

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July 10th, 2015 3:28am

Have you confirmed the 2nd Lync Front End pool is associated to the correct Edge servers in Topology Builder? Do you have one Edge pool or two?

Double check the Edge pool has the correct firewall rules to communicate with the 2nd Front End pool and that DNS resolution is correct (might be missing entries in the Edge host file).

July 10th, 2015 10:33am

Most likely this happen when your new pool is not associated with EDGE server. If this is already taken, then check CDR logs.
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July 10th, 2015 12:07pm

Hi,

I resolved the issue by adding host entry of poolname to servername itself. Due to some issue server is unable to contact focus on other FE. This resolved it for now but looking for a permenent soultion.

July 16th, 2015 10:54am

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