MAPI call failed. Error 'Network problems are preventing connection to the Microsoft Exchange Server computer.', LowLevelError 1722, Component 'Microsoft Exchange Server Information Store', Context 1300

Starting to get plenty of the above messages in my MAGT logs now and users are experiencing dropouts in mails being delivered and having troubles activating new devices.

BES is Exchange, latest version with latest service packs. Service account that the BES was originally installed under was based on a UK Exchange box whereas the BES is based in Sydney.

Went about creating the new service account on the Sydney Exchange and switched over for everything to use that. Have since applied the service packs as that service account.

Any ideas as to what could still be causing the dropouts?

The BES is running in a VM Server thats running Win2k3 SP2 32 bit, on a box thats running Win2k3 SP2 64bit.

The BES does seem to get packet loss from to the Exchange box. Running the same traces on the box the VM is running on gets no packet loss. Ping times between all boxes are sub 10ms.

Any ideas at all anyone?

Would it be worth a re-install of the BES under the new service account just to make sure that there aren't any underlaying issues from when that was swapped over?

Cheers all once again ;)

That is a MAPI network error, no fault of the BES. What is the ping time between the BES and Exchange? Are there any performance issues on the Exchange server?

Essentially MAPI is having trouble communicating with the Exchange server and is reporting it as a network issue.

I would investigate the network and possibly the Exchange server.

A re-install of the BES won't make a difference nor will the service account. The warnings maybe on the BES but it is not a BES issue, not from what I've seen anyways. I have seen other posts about this and it is usually the network.

ping times between bes and exc are sub 10ms.

Potentially its a VMware issue so I may try creating another VM on a different (non 64bit) box and then do a clean install.

Is there a document for how to move to a clean install? Its using a standard MSDE database so I'm guessing that'll need moving across.

Cheers,

Andy

Just search BlackBerry Technical Solution Center for "knife edge cutover", there's an article for BES 4.0 and 4.1. That will give you a step by step process to follow.