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Looking for feedback on Exchange 2010 mailbox size

Last Modified: 2012-02-10
OK experts, I'm looking for your feedback/comments/recommendations regarding the size of a mailbox on Exchange 2010 versus usability and efficiency. Let me explain:

We've got a very standard single server Exchange 2010 setup. There's about 250 mailboxes on the server spread across 3 separate data stores. For the most part things are working just fine. Then there's our CEO. All quota caps have been removed for his mailbox (per his request), so here's the stats on his current mailbox:

Total Items: 169,365
Size: 3,217,831 KB

He uses Outlook 2010 on a PC in our office. He has an iPhone, two iPads, and MacBook Air that connect to his mailbox through the built-in apps on those devices. He seems to have nothing but trouble trying to get everything to stay in sync. I'm curious if this is possibly related to the overall size and number of items in his mailbox.

I use a Mac primarily and also have an iPhone and iPad connected to my Exchange account. I do not experience any syncing trouble. In general, I don't hear from much of anyone else regarding the kinds of problems he runs in to.

Thoughts? Suggestions? Past experience? I'd like to hear from you.

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IT Director
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He does file things in to sub-folders. Currently his main Inbox folder only has 49 items in it. He does have lots of contacts - nearly 5,000. Something happened the other day while we were restoring and connecting some iOS devices of his and his Contacts started ballooning. They reached almost 10,000. We basically had to removed and re-add his Exchange account on each device.

It's weird things like this, and overall general inconsistency across devices that makes me question the integrity of his mailbox. He's got one of the oldest mailboxes on the server, and over the years we've migrated up from Exchange 5.5 -> 2003 -> 2010. I'm almost wondering if there's any value in archiving his mailbox to PST, then removing his existing mailbox all together, create a new one and them import items back in.
Jamie McKillopIT Director

The number of contacts might be the issue. 5000 is a lot of contacts.

Lee W, MVPTechnology and Business Process Advisor
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Thanks all for your input this far.

It's probably worth noting that his Deleted Items is quite monstrous. He's currently just over 96k in that folder.

I really do appreciate all of your help. I've been having small battles with him recently trying to get devices to sync properly, and I can't help but think that the overall status of his mailbox is contributing to the trouble. I've been at this company for 14 years and my mailbox rarely exceeds 500MB, but then again I don't use my mailbox as a filing system.

I'd also be interested to hear about any ActiveSync (iOS) challenges/gotchas that you've run across.

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