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A potential fix for Mail.app and IMAP problems
Authored by: eno on Dec 08, '03 12:19:11PM

This is not really a Mac OS X hint at all... But in any case, I had the same problem.

I changed the setting in the Courier imapd file on my FreeBSD server to 16, and Mail's behaviour calmed down somewhat.

As far as I can tell, Mail not only opens these connections en masse, but it maintains them in the open state for as long as it's running... I think this is something that Apple should fix... firstly, make fewer connections per account; and secondly, if there are multiple mail accounts to be checked or synchronised, at least have the option to do them one at a time; and thirdly, do not leave the connection hanging open while Mail app is running.



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A potential fix for Mail.app and IMAP problems
Authored by: Beernd on Dec 08, '03 02:47:23PM

No, that's a feature, not a bug! IMAP has the nice feature of unsollicitedly giving notice to a client when something changes, like when new mail arrives, but for that the connection needs to stay open. That way one doesn't need to ask the server every n minutes if there's new mail.

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"Perhaps nothing is quite true, and not even that!"
Multatuli, Ideen 1



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A potential fix for Mail.app and IMAP problems
Authored by: sitharus on Dec 08, '03 03:44:56PM

Not for mail. This is not part of the IMAP spec, it's an extension called IDLE, it only works if the client supports it. From analysing my logs, mail does not support it.

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--sitharus



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A potential fix for Mail.app and IMAP problems
Authored by: ab on Dec 08, '03 03:47:12PM

Not from firsthand experience, but I've heard that Outlook also does this to IMAP servers in IMAP mode. Could the Exchange compaible features added to Mail.app have made Mail.app behave more like Outlook? Their synchronization is really designed for a LAN environment and does not seem to work with a dialup connection at all let alone servers with connection limits.

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-ab



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