[Dovecot] tb-negative-fetch workaround

[Charles Marcus]

> I don't have actual ideas on the problem, but I can offer up some help 
> on how to debug it. Save the below as "runtbird.bat" and place it on the 
> user's desktop, and tell them to run this instead of the ThunderBird 
> icon. This will log all the debug info from the client so you can go 
> through it:

<snip>

Very cool! Thanks - saved for future referenc

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Best regards,

Charles