On 30/10/2015 13:35, Sam Varshavchik wrote: > 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. > Which would be a very very short list (almost empty). While Thunderbird is not getting on too well, it seems to be the least bad gui IMAP client out there, especially for Windows.
Specifically: Office Outlook 20xx is notorious for its IMAP bugs and misfeatures, it is particularly incompatible with the way courier uses namespaces with virtual users. Windows Mail/live mail client/Outlook express is pretty lightweight for daily use and I am unsure if it handles IMAP in any sane way. Evolution is long dead upstream. Opera seems so much in turmoil with its shifting of focus and all, anyway I stopped considering them back when their attempt at a "search based" e-mail client tended to mangle mail some years ago. Thunderbird is at least still getting regular updates and has recently had new low level feature additions, such as storing local copies in Maildir rather than mbox format (though that feature was initially buggy for IMAP accounts, at least they are working on it.) Thunderbird also seems to understand some "recent" IMAP features, such as the server indicating which specific folders correspond to the standard main folders (Spam, Inbox, Sent mail etc.), and ways to move mails between folders without going through a download, upload, delete, expunge cycle. I am not sure what other IMAP clients (not web mail systems) are available for Windows desktops. Enjoy Jakob -- Jakob Bohm, CIO, Partner, WiseMo A/S. http://www.wisemo.com Transformervej 29, 2860 Søborg, Denmark. Direct +45 31 13 16 10 This public discussion message is non-binding and may contain errors. WiseMo - Remote Service Management for PCs, Phones and Embedded ------------------------------------------------------------------------------ _______________________________________________ Courier-imap mailing list Courier-imap@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-imap
