[Dovecot] Thunderbird caching problem

[Dave McGuire]

On 08/31/2011 02:59 PM, Chris Cappuccio wrote:
> Using a fairly simple dovecot config (which obviously needs some max
> limit tweaking) we have problems with IMAP synchronization between
> thunderbird clients.
>
> Two TB clients in the same IMAP mailbox will, from time to time, show
> different views of the same INBOX folders, when TB caching is
> enabled.  The only fix is to right-click on the folder, go to
> "Properties" and use the "Repair Folder" option which repairs the
> local TB .msf cache file.
>
> Is there any server-side fix/workaround that would keep TB from
> regularly going out-of-sync ? This happens with TB3 and newer
> versions, in concert with either dovecot 1 or 2.

   I ran into exactly this problem as well, it is infuriating.  A 
workaround was discussed here awhile back.  Sticking this in the 
"protocol imap" block of dovecot.conf solved the problem completely:

imap_capability = IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE 
IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND 
UNSELECT CHILDREN NAMESPACE UIDP
LUS LIST-EXTENDED I18NLEVEL=1 ESEARCH ESORT SEARCHRES WITHIN 
CONTEXT=SEARCH LIST-STATUS

   That should all be one line; watch for wrappage.

             -Dave

-- 
Dave McGuire
Port Charlotte, FL