disable IMAP IDLE

Ron Vachiyer proutfoo at hotmail.com
Fri Nov 26 10:10:37 EST 2010

Well after a number of tests, it seems that without IDLE, Blackberries are "smart" and disconnect.  iPhones and mail clients (Outlook, Thunderbird) remain connected.  This is consistent with what they are doing now so they will have to live with it.  Unsure what the real reason behind IDLE-less capability is but I am under direction not to enable it.

Thanks again all,


> Date: Tue, 23 Nov 2010 14:36:47 -0800
> From: david.lang at digitalinsight.com
> To: robm at fastmail.fm
> CC: proutfoo at hotmail.com; iane at sussex.ac.uk; info-cyrus at lists.andrew.cmu.edu
> Subject: RE: disable IMAP IDLE
> On Wed, 24 Nov 2010, Robert Mueller wrote:
> >> I was asked by IT to not permit IDLE since the current server went down
> >> after 4-500 blackberries ate up all the (limited) capabilities of that
> >> machine.
> >
> > I'd really be surprised if that was a problem these days. We have
> > machines that have 10000 connections quite fine. Yes they're fairly
> > loaded servers with fast IO and lots of RAM, but even a pretty basic
> > server should handle 500 connections no problem.
> >
> > Have you actually tested that long lived IDLE connections are a problem?
> if they are idle they eat up very few resources, if they are checking things 
> frequently, forcing them to reconnect each time will just eat up more resources.
> David Lang
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