Dusan writes:
Hi,I'm using courier-imap version 4.10.0-2012061 on Debian Wheezy (latest old stable). As client we are using Mozilla Thunderbird on Windows (almost everywhere latest version).Few clients have problem - Thunderbird notify "operation has failed" and in server log I see:Oct 29 05:57:43 mail imapd: j.novak: TOO MANY CONSECUTIVE PROTOCOL VIOLATIONS Oct 29 05:57:43 mail imapd: j.novak: TOO MANY CONSECUTIVE PROTOCOL VIOLATIONS Oct 29 05:57:43 mail imapd: j.novak: TOO MANY CONSECUTIVE PROTOCOL VIOLATIONS Oct 29 05:57:44 mail imapd: j.novak: TOO MANY CONSECUTIVE PROTOCOL VIOLATIONS Oct 29 05:57:44 mail imapd: j.novak: TOO MANY CONSECUTIVE PROTOCOL VIOLATIONS Oct 29 05:57:44 mail imapd: j.novak: TOO MANY CONSECUTIVE PROTOCOL VIOLATIONS Some users has it more offten then others.I'm using this solution (courier-imap+thunderbird) on more servers and have same problems.Please how can avoid this error?
The IMAP client is sending invalid commands. To avoid this error, stop the client from sending invalid commands.
The server, by default, does not log the client's actual IMAP commands. One course of action would be to set IMAPDEBUGFILE in the imapd configuration file, as per instructions, restart the server, then create an empty zero- length file of that name in a sample account's maildir, then access it using Thunderbird until this error gets logged.
This will compile a log of the client's IMAP commands, that can be examined to determine, perhaps, why it's sending invalid commands, but it will be necessary to have understanding of IMAP in order to interpret the log. This will likely be a Thunderbird bug. Mozilla has abandoned Thunderbird, and this product is no longer in active development. Although, recently, an outside group of developers has started working on it, its future is uncertain, and the best course of action is to find some other IMAP client.
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