More info, may be related to antispam plugin 

imap(x...@xyz.xyz): Error: Cached message size smaller than expected (4293 < 
8192)
imap(x...@xyz.xyz): Error: Corrupted index cache file 
/xyz/Maildir/.Junk/dovecot.index.cache: Broken physical size for mail UID 0
imap(x...@xyz.xyz): Error: 
read(zlib(/xyz/Maildir/.Junk/tmp/1394709643.M419216P12667.xyz)) failed: Invalid 
argument (uid=0)


Le 12 mars 2014 à 18:51, Stéphane Cottin <stephane.cot...@vixns.com> a écrit :

> Hello,
> 
> After upgrading to 2.2.12 and adding stats plugin, got a lot of errors like 
> this : 
> stats: Error: Mail server input error: UPDATE-SESSION x...@xyz.xyz imap: 
> stats shrank: mcache 900988905 < 1039472051
> 
> Stéphane
> 
> <dovecot.conf>
> 
> 

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