troubleshooting Question

Exchange 2010 SP3 Enterprise - Outbound Emails through 2 CAS servers

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trinity2007 asked on
ExchangeWindows Server 2008
2 Comments1 Solution89 ViewsLast Modified:
Greetings,

We are running Exchange 2010 SP3 Enterprise on Windows 2008 R2 Enterprise.  4 Servers:  2 servers with CAS/Hub Transport role, and 2 servers with Mailbox Role.  Mailbox Servers are set up with DAG.
All 4 servers are at the same site/subnet.  No load balancing configured.
Something I'm trying to understand is with outbound email: 95% of the time emails get routed out through one CAS/HubTransport server and other times, maybe 5%,  route out through the other CAS/Hub Transport server.  I'm not sure what logic (or configuration) determines why emails get routed out one CAS/Hub Transport server vs the other.  Is this something native within Exchange that knowingly changes the outbound path for any particular reason?
ASKER CERTIFIED SOLUTION
Scott C
Senior Engineer

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