[Bug 270691] IMAP agent stops working after some time with Exchange Server

Thiago Macieira thiago at kde.org
Wed Dec 14 10:07:57 GMT 2011


https://bugs.kde.org/show_bug.cgi?id=270691





--- Comment #12 from Thiago Macieira <thiago kde org>  2011-12-14 10:07:56 ---
I might be able to offer some more insight: this problem is related to
authentication. It happens when the IMAP server rejects the AUTH command.

The way that IMAP on Exchange works, the IMAP front-end and the Exchange
back-end might be different servers. If the two stop talking to each other for
whatever reason, like a network problem, the IMAP front-end will be unable to
authenticate and will reply with NO.

This happened quite often at Nokia due to the load balancing. It doesn't happen
often at all at Intel, but it happened yesterday due to network outage. I
didn't notice that the connection was stuck in "Connection established" state
until this morning.

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