MBOX-Line: From tss at iki.fi  Thu Jan 25 02:06:04 2007
To: imap-protocol@u.washington.edu
From: Timo Sirainen <tss@iki.fi>
Date: Fri Jun  8 12:34:38 2018
Subject: [Imap-protocol] Microsoft Outlook IMAP non-compliance:
	negative UIDs
In-Reply-To: <alpine.LRH.0.82.0701241824421.30514@shiva1.cac.washington.edu>
References: <alpine.LRH.0.82.0701241824421.30514@shiva1.cac.washington.edu>
Message-ID: <1169719564.13714.411.camel@hurina>

On Wed, 2007-01-24 at 18:25 -0800, Mark Crispin wrote:
> This sounds like a great way for a site administrator to ban use of 
> Outlook; just make the IMAP server assign UIDs starting at 0x80000000.

Outlook isn't nearly the only client that has problems with it. Just a
couple of days ago I received a mail requesting that my server
automatically renumber all UIDs once they get over 31bit:

> Some IMAP clients I've tested (Thunderbird 1.5.0.9, SquirrelMail
> 1.4.9a/PHP 4.3.2) appear to use signed 32 bit identifiers and request
> the above message as UID 2147483647 (max signed 32 bit integer).

I'm sure there are a lot more.

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