Request size problem with Zimbra

Daniel Shahaf d.s at
Tue Mar 27 14:45:13 BST 2012

Lukas Zapletal wrote on Tue, Mar 27, 2012 at 15:15:03 +0200:
> Hello,
> I am using offlineimap with Zimbra and it works very well. The only
> thing is when I am offline for few days and some of my lists gets
> filled, offlineimap is hitting some Zimbra boundaries and prints:
> parse error: maximum request size exceeded
> Not being IMAP expert, from the exception I can see offlineimap is
> sending a big request. Is there any configuration or hack that could
> help me setting this to a reasonable value? From various internet
> resources I understand it is set to 2048.
> The full log:
> WARNING: ERROR in syncfolder for XXXX folder xxxxxxxxx: Traceback (most recent call last):
>   File "/usr/lib/python2.7/site-packages/offlineimap/", line 340, in syncfolder
>     remotefolder.cachemessagelist()
>   File "/usr/lib/python2.7/site-packages/offlineimap/folder/", line 175, in cachemessagelist
>     response = imapobj.fetch(messagesToFetch, '(FLAGS UID)')[1]
>   File "/usr/lib/python2.7/site-packages/offlineimap/", line 704, in fetch
>     return self._simple_command(name, message_set, message_parts, **kw)
>   File "/usr/lib/python2.7/site-packages/offlineimap/", line 1549, in _simple_command
>     return self._command_complete(self._command(name, *args), kw)
>   File "/usr/lib/python2.7/site-packages/offlineimap/", line 1314, in _command_complete
>     raise self.error('%s command error: %s %s. Data: %.100s' % (, typ, dat,
> error: FETCH command error: BAD ['parse error: maximum request size exceeded']. Data: JNAH182 FETCH 
> 12316,12317,12318,12319,12320,12321,12322,12323,12324,12325,12326,12327,12328,12329,......

You could hack offlineimap (or libimap?) to use ranges here:

JNAH182 FETCH 12316:12329,......

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