Having an issue on my iPhones and Droid devices where the email push to the phones sometimes takes 30-45 minutes to post. Manual refresh pulls down data so I know the connection is good, it is just that any new items to hit the mailbox take a long time to post.
Exchange 2003 SP2 with OWA server.
I found an article: http://support.microsoft.com/kb/905013
That talks about heartbeat values that would seem to be pertinent. But before making these changes, I wanted to check in to see if this will cause other issues. Note: My server does not have any of these values in the registry and would need to be added. Thus, my concern before adding them.
Also, I did check the firewall timeout values on rules pertaining to OWA and Exchange and they are all at 30 minutes. Is there some other place on OWA or Exchange I need to check?