[IMail Forum] Slow Web Messaging - Corrupt MBX Files?

[Dave Parfrey]

We've been using Imail since version 4.x and we're currently running 7.14. 
We have about 3000 users, most using Web Messaging to read their mail. 
Recently we've had a problem of mailboxes (evidently) being corrupted. I 
have one main.mbx file that I'm playing with now. Here's what I did:

Since we're going to be moving to a beefier server soon (we're adding 
another several thousand users), I have a brand new, currently unused, 
server to play with. I created a test domain and user, and dumped the 
main.mbx file into it. It took about 5 minutes to display the first page of 
messages! There were 200 messages in the mailbox, and it's an unused 
dual-proc 2.5 gHz Xeon server. During this time, the CPU's were "pegged" at 
50%. Obviously, something's wrong.

I then created a new mailbox, copied the messages over (with Web 
Messaging), deleted the old file, and renamed the new file back to 
main.mbx. This time, the message display was instantaneous.

Does anyone know what's happening? Is there a utility available to fix 
problem mailboxes? We've occasionally had weird problems with mailboxes in 
the past, but nothing like this.

Thanks - Dave

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