Log Name: Application
Source: MSExchange Unified Messaging
Date: 11/04/2012 9:40:38 p.m.
Event ID: 1400
Task Category: UMCore
Level: Warning
Keywords: Classic
User: N/A
Computer: ExchangeServer.domain
Description:
The following UM IP gateways did not respond as expected to a SIP OPTIONS request.
Transport = TLS, Address = LyncServer.domain, Port = 5067, Response Code = 0, Message = This operation has timed out.
Event Xml:
< Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="MSExchange Unified Messaging" />
<EventID Qualifiers="32772">1400</EventID>
<Level>3</Level>
<Task>2</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2012-04-11T09:40:38.000000000Z" />
<EventRecordID>7562</EventRecordID>
<Channel>Application</Channel>
<Computer>ExchangeServer.domain</Computer>
<Security />
</System>
<EventData>
<Data>Transport = TLS, Address = LyncServer.domain, Port = 5067, Response Code = 0, Message = This operation has timed out.
< /Data>
</EventData>
< /Event>
And this error on the Lync server.
Log Name: Lync Server
Source: LS Mediation Server
Date: 11/04/2012 7:38:19 p.m.
Event ID: 25087
Task Category: (1030)
Level: Error
Keywords: Classic
User: N/A
Computer: LyncServer.domain
Description:
There were one hundred TLS negotiations failures with incoming connections with the following remote peer on the Mediation Server Gateway side TLS endpoint.
Remote Endpoint: 192.168.x.xxx
Cause: A gateway may not be configured correctly, for example the Gateway peer may not be configured to send connections to the port Mediation Server is listening to. If this event fires multiple times in a short period for the same remote peer, the connections from this peer can be malicious connection attempts.
Resolution:
Check the Mediation Server and the Gateway server's certificates are configured correctly. Check if the MEDIATIONSERVER_MAJOR_CONFIGURATION_ALARM (Event ID: 25057) has been fired. Check whether the remote endpoint a known peer.
Event Xml:
< Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="LS Mediation Server" />
<EventID Qualifiers="50182">25087</EventID>
<Level>2</Level>
<Task>1030</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2012-04-11T07:38:19.000000000Z" />
<EventRecordID>7205</EventRecordID>
<Channel>Lync Server</Channel>
<Computer>LyncServer.domain</Computer>
<Security />
</System>
<EventData>
<Data>192.168.x.xxx</Data>
</EventData>
< /Event>
Bookmarks