[Tickets #11413] Getting error he mail server does not support IMAP4rev1 (RFC 3501).

[bugs at horde.org]

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Ticket URL: http://bugs.horde.org/ticket/11413
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  Ticket             | 11413
  Created By         | steve at quorg.org
  Summary            | Getting error he mail server does not support IMAP4rev1
                     | (RFC 3501).
  Queue              | Horde Base
  Version            | 4.0.15
  Type               | Bug
  State              | Unconfirmed
  Priority           | 2. Medium
  Milestone          |
  Patch              |
  Owners             |
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steve at quorg.org (2012-09-11 09:45) wrote:

This is an intermittent bug and I'm afraid I can't find any pattern as  
to how to get it repeatably.

When logged in, i will click on my inbox, or select a message from my  
inbox and I will get the following error:
"The mail server does not support IMAP4rev1 (RFC 3501)."

After this point, i can log out/back in and will still get it.  
Restarting firefox doesn't help. After a day or two it will seem to  
fix itself and I can read emails again.

I have noticed this behaviour on Firefox 13-15 but not on Chrome.