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An IMAP4 client crashes when accessing an Exchange Server 2010 mailbox

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A user access a Microsoft Exchange Server 2010 mailbox by using an Internet Message Access Protocol 4 (IMAP4) client. The IMAP4 client crashes if there are S/MIME messages in the mailbox.

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This problem occurs because Exchange Server 2010 returns negative values for message size, which is incompatible with RFC.

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To resolve this problem, install the following update rollup:
982639 Description of Update Rollup 4 for Exchange Server 2010

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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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More information

For more information about IMAP4, visit the following website:

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Keywords: KB979790, kbhotfixrollup, kbfix, kbqfe, kbexpertiseinter, kbsurveynew

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Article Info
Article ID : 979790
Revision : 2
Created on : 6/18/2010
Published on : 6/18/2010
Exists online : False
Views : 360