Hmmm, one thing to perhaps try first is upgrading your software. You mentioned that your dovecot is version 1.2.17. I'm running 2.2.15 (which is also older. Current version is 2.2.25). I know there were major changes between version 1.x and 2.x.
Your Ubuntu is 14.04 which is 2 released old, now at 16.04 (I'm running 15.10). I do have 16.04 booting with x86, but I haven't yet installed it.
You didn't mention your Thunderbird version, but I'm guessing they are similarly dated. My Ubuntu Tbird is 38.8.0 and my Win7 is 45.2.0.
It could be your older versions of things don't support what you want.
My dovecot server is Slackware64 14.1. One of the users has over 1400 mail folders and 7.2G of IMAP space. She has had no problems with Thunderbird.
All of our WIN7 workstations are x64, so perhaps there are issues with x86 version of dovecot/Thunderbird.
--Mark
-----Original Message-----
Subject: Re: an e-mail client for dovecot ? To: dovecot@dovecot.org From: Kenneth Porter shiva@sewingwitch.com Date: Sat, 16 Jul 2016 16:52:08 -0700
On 7/16/2016 10:22 AM, Mark Foley wrote:
I concur with Charles Marcus' query: can you elaborate on how Thunderbird is failing for you?
I run Thunderbird and Mulberry side-by-side, as there are features in Mulberry I don't want to give up, even though it's old and buggy. I've noticed that Mulberry finds folders in my huge hierarchy (100's of folders) that Tbird misses. Notably my SpamAssassin folder, and it's consistent across several accounts I monitor. Both programs are set to scan all IMAP folders. It's not just because the SA folder is flagged as an additional Junk folder. I've got other folders that Tbird misses. Most receive automated server mail from Linux services (such as logwatch). I haven't been able to find a pattern.