getting NO [TRYCREATE] APPEND error finding folder

Hello,

Thank you for the great tool for the first of all! Very useful. I'm working on public library and migrating mailboxes from old zarafa server to new kopano. Using latest nightly build kopano server and latest imapsync

mail:~# imapsync --version
2.200

I have successfully migrated like 90% of boxes and suddenly started to get these errors:

• msg INBOX/Sent/286022 {696} couldn't append (Subject:[E-postkastist]) to folder INBOX/Sent: 11885 NO [TRYCREATE] APPEND error finding folder
• msg INBOX/Sent/287192 {662} couldn't append (Subject:[Pildistamine]) to folder INBOX/Sent: socket closed while reading data from server; 11888 NO SELECT error getting mails in folder; 11889 NO [TRYCREATE] APPEND error finding folder

I checked the quota for users and there is none set (means no limits)

Current user store quota settings:
Quota overrides: yes
Warning level: unlimited
Soft level: unlimited
Hard level: unlimited
Current store size: 3.03G

and it seems i can't solve it myself. What could be the reason? Last time I started the sync process, I've added the --pipemess "reformime -r7" like QA says. Now waiting for it. The boxes are pretty "heavy". starting 4GB and ending 96GB. Meanwhile, the 96GB box has like 93GB migrated already. Every time I start the process, it copies some amount of mails and fails with these errors (50 out of 50).

Any hints?

more errors:

msg Vahekirjad/Vahekirjas_2012-2014/1579506 {6832} could not append ( Subject:[=?Windows-1252?Q?Re:_TTV_N=F5ukogu_21.09_p=E4evakord?=], Date:["18-Sep-2012 22:53:57 +0000"], Size:[6832], Flags:[\Seen $Forwarded] ) to folder Vahekirjad/Vahekirjas_2012-2014: 4864 NO [TRYCREATE] APPEND error finding folder

• msg Vahekirjad/Vahekirjas_2012-2014/1579507 {61665} could not append ( Subject:[Ainult 3=?windows-1257?Q?=20p=E4eva=20?=registreerumiseks Teenindus- ja=?windows-1257?Q?=20M=FC=FCgitreff=20?=2012=?windows-1257?Q?=20koolitusp=E4evale?=], Date:["19-Sep-2012 06:12:05 +0000"], Size:[61665], Flags:[\Seen] ) to folder Vahekirjad/Vahekirjas_2012-2014: 4865 NO [TRYCREATE] APPEND error finding folder
• msg Vahekirjad/Vahekirjas_2012-2014/1579508 {40554} could not append ( Subject:[[ELNET-yld] veel kord Biblioteca Balticast], Date:["19-Sep-2012 06:56:10 +0000"], Size:[40554], Flags:[\Seen] ) to folder Vahekirjad/Vahekirjas_2012-2014: 4866 NO [TRYCREATE] APPEND error finding folder
• msg Vahekirjad/Vahekirjas_2012-2014/1579509 {3537} could not append ( Subject:[veeuputusest ning projektidest ja joonistest], Date:["19-Sep-2012 07:12:54 +0000"], Size:[3537], Flags:[\Seen] ) to folder Vahekirjad/Vahekirjas_2012-2014: 4867 NO [TRYCREATE] APPEND error finding folder
• msg Vahekirjad/Vahekirjas_2012-2014/1579510 {4698} could not append ( Subject:[=?utf-8?b?W2vDtWlrIGFzdXR1c2UgdMO2w7Z0YWphZF0=?= haldusteenistus], Date:["19-Sep-2012 07:46:42 +0000"], Size:[4698], Flags:[\Seen] ) to folder Vahekirjad/Vahekirjas_2012-2014: 4868 NO [TRYCREATE] APPEND error finding folder
• msg Vahekirjad/Vahekirjas_2012-2014/1579511 {11270} could not append ( Subject:[[TLU-INFO] =?windows-1257?B?RXNtYWFiaWFuZGphdGUga29vbGl0dXMgVEzcIHT29nRhamF0ZWxlIDQuMTAgamEgMTcuMTA=?=], Date:["19-Sep-2012 07:55:46 +0000"], Size:[11270], Flags:[\Seen] ) to folder Vahekirjad/Vahekirjas_2012-2014: 4869 NO [TRYCREATE] APPEND error finding folder
• msg Vahekirjad/Vahekirjas_2012-2014/1579512 {5251} could not append ( Subject:[], Date:["19-Sep-2012 08:26:47 +0000"], Size:[5251], Flags:[\Seen] ) to folder Vahekirjad/Vahekirjas_2012-2014: 4870 NO [TRYCREATE] APPEND error finding folder
• msg Vahekirjad/Vahekirjas_2012-2014/1579513 {8949} could not append ( Subject:[], Date:["19-Sep-2012 08:35:29 +0000"], Size:[8949], Flags:[\Seen] ) to folder Vahekirjad/Vahekirjas_2012-2014: 4871 NO [TRYCREATE] APPEND error finding folder