We help IT Professionals succeed at work.
Get Started

Mail Flow in EXCHANGE 2010

Jimmy Vad
Jimmy Vad asked
Last Modified: 2017-04-01
Hi Experts,

I have a question about mail flow in Exchange 2010 environment. First, some background of our setup:
-we have two Exchange 2010 servers, one in production site, one in DR site.
-both of them are CAS role, mailbox role, and hub transport role at the same time
-they are in 1 DAG group
-we use a DNS alias as a CAS name and resolve it to the IP of the exchange server in production site (in a case of production server failure, we have to update the IP of DNS manually to point it to the DR Exchange)
-we have another hardware appliance as "send connectors"
-we use Outlook 2010
-users are connecting to production exchange server via the DNS CAS name

Now, my question is - when i checked the message tracking, i found that for each email submitted, it went to the DR exchange. In the message tracking log, the "ClientHostname" is always the production exchange server, and the "ServerHostname" is always the DR exchange server name.   I don't understand why the email wasn't sent from production exchange directly to the send connector, but to the DR exchange first.

I hope im making myself clear here. Apologize that im not an Exchange expert, hopefully i've included all necessary information in the question.

Watch Question
EE Solution Guide - Technical Dept Head
Most Valuable Expert 2020
Most Valuable Expert 2017
This problem has been solved!
Unlock 1 Answer and 2 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE