?
Solved

Exchange 2010 Connectivity/ BlackBerry queries

Posted on 2011-09-05
1
Medium Priority
?
851 Views
Last Modified: 2012-05-12
Hi

We are running BES 5.1.3 with Exchange 2010 SP1. In our main site, we have an Exchange 2010 CAS array (uk-array-cas1) made up of 5 CAS servers (uk-cas1, uk-cas2....uk-cas5). We then have mailbox servers (uk-mbx1, uk-mb2...etc).


Connections to the CAS array are load balanced by a Cisco Load balancer.


Our BES servers are configured with a MAPI profile for a mailbox named uk-svc-bes5. The mailbox itself is held on uk-mbx1. If I check the BES MAPI profile on each server, I can see that they are pointing to uk-array-cas1.

I had some questions related to this connectivity.


i. Does BES actually ever access the service account mailbox itself, or does it use this mailbox for permissions to access the GAL and other people's mailboxes?

ii. Its my understand that it's the Messaging Agents (MA's) that are responsible for spawning MAPI threads to the users' mailboxes. So how does this actually work with Exchange 2010? Does each MAPI profile connect directly to uk-array-cas1, or does it somehow resolve which CAS servers are in this and have a direct connection to a CAS server? Our Cisco Load Balancer has a virtual IP, if I used a network sniffer would I expect to see a connection ot the virtual IP of the CAS or one of the component CAS servers?


iii. What if we had a BES account that was in Germany for example. That has a similar set up with germany-array-cas1 and so on. Would the MAPI connections be to germany-array-cas1, one of the German CAS servers or still the UK array/cas server and then redirection from there to somewhere else
0
Comment
Question by:bruce_77
1 Comment
 
LVL 8

Accepted Solution

by:
oldhammbc earned 2000 total points
ID: 36487630
Hello,

Was just having a look through your questions and ill try to answer them the best I can.

1. The blackberry mailbox is accessed and logged into by the blackberry service mailbox to send emails and access GAL's etc. When the bes server sends an email it sends it from its own mailbox using the "send as" permission for the actual user. (hope that makes sense)

2. Ive never used a Cisco load balancer with exchange but im guessing it will work the same as windows NLB (hopefully with lots more features to justify the cost!). The bes server acts exactly like outlook, so in exchange 2010 all connections will go through the CAS using the virtual ip of the load balancer.
The only issue ive seen with load balancing is because the blackberry server is a single source IP the traffic from it all gets sent to one cas server rather than being spread around cas servers in the array. To fix this id see if there are any settings on the load balancers regarding afinity and if there were any options other than on source ip address.

3. ive never got into this level of depth but as far as i know as log as it was in the same domain the bes server would use the closest CAS server and that server would proxy over to the cas / mailbox servers in Germany.

Hope that helps a bit!

Best Regards

Dave J
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

What is Archiving? Archiving in Exchange Online (called In-Place Archiving) provides users with additional mailbox storage space.
Fix RPC Server is unavailable Error in Exchange 2013, 2010, 2007, and 2003 Server. Different reason can such as network connectivity issue, name resolution issue, firewall, registry corruption that lead to RPC Server Unavailable error.
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…

585 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question