MBOX-Line: From tss at iki.fi  Thu Dec 28 09:29:51 2006
To: imap-protocol@u.washington.edu
From: Timo Sirainen <tss@iki.fi>
Date: Fri Jun  8 12:34:38 2018
Subject: [Imap-protocol] reporting/detecting expunged messages
In-Reply-To: <LWKbk3lpdVhtHUTm38BDeA.md5@libertango.oryx.com>
References: <4505F2FE.8090807@sun.com>
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	<450713AB.4090601@sun.com>
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	<45071A57.5080406@sun.com>
	<9SYO8YZNXU3qj9EYGtuGNg.md5@libertango.oryx.com>
	<Pine.WNT.4.65.0609121437140.2164@Tomobiki-Cho.CAC.Washington.EDU>
	<2xKZXsAOqJTXDcZB/xUw7g.md5@libertango.oryx.com>
	<Pine.WNT.4.65.0609141841560.1540@Tomobiki-Cho.CAC.Washington.EDU>
	<LWKbk3lpdVhtHUTm38BDeA.md5@libertango.oryx.com>
Message-ID: <7649676B-5A1C-42A7-88D2-CC86B01F81CB@iki.fi>

On 15.9.2006, at 16.53, Arnt Gulbrandsen wrote:

>>> IMO,  it depends on the precise text. Requiring that all clients  
>>> offer the server an opportunity to send EXPUNGE every so often  
>>> can't be all that bad, but how often? "EXPUNGE may not take  
>>> effect completely until half an hour after the tagged OK" sounds  
>>> overly long to me. "Clients must give the server the opportunity  
>>> to send EXPUNGE at two-minute intervals or more often" sounds  
>>> much too short. Ten minutes sounds both too short and too long.  
>>> All partly subjective of course.
>>
>> In my opinion, the minimum period should be between 5 and 30  
>> minutes.  NAT has pretty much made it non-viable to go idle for  
>> more than 5 minutes.
>
> Then five minutes.

5 minutes sounds pretty short to me. Have you tried adding such a  
check yet and see what it does to clients? I was thinking something  
like 15-30 minutes.
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