As it turns out, Exchange is changing the IMAP message ID every time one of the above actions occurs*. This causes RIM to see the message as new and re-transmit it to the handheld.
The options to fix it are..
Switch BIS to POP3 instead of IMAP. But then deleted items sync won't work.
Switch to Blackberry Enterprise Server. $5k in software fees, more depending on your user count.
Switch BIS to OWA..
That last option is the most promising. Unfortunately, with Exchange 2007 and forms based OWA authentication (the default), the normal url https://example.com/exchange doesn't work. Neither does https://example.com/owa.
What does work... the magic bullet for BIS+OWA on Exchange 2007 is..
http://example.com/exchange/you@example.com
I have not found this tidbit on any forums or documentation, and I really hope it helps someone.
Good Luck,
Ellie
* Constructive criticism for Microsoft.
4 comments:
Hey there, thanks heaps for the helpful article. Just in case you need to put this through a linux firewall and are using ssl;
allow the port for https connection to owa, then in the blackberry setup enter:
https://yourserver.com./owa/auth/username@yourserver.com
seemed to be the last step with exchange 2007 and owa access via blackberry.
None of these 2 suggestions above worked for BIS integration with OWA. We use forms-based authentication and https for OWA.
Do you by any chance have other suggestions?
Thank you in advance,
Leo
This article was the answer to all my challenges. I did have to make two little changes.
https://yourserver.com/owa/username@yourserver.com
I can't thank you enough! You are a rock star!!!
This is the only article that has been very helpful which actually solved my duplicate emails when using IMAP. I'm on MS Outlook (Office 365) with a blackberry 9930 BIS account.
Thanks so much!!!
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