dovecot - Mar 2014 - Mail server input error: UPDATE-SESSION

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 xyz at xyz.xyz imap: stats
shrank: mcache 900988905 < 1039472051

St?phane

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More info, may be related to antispam plugin 

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


Le 12 mars 2014 ? 18:51, St?phane Cottin <stephane.cottin at vixns.com> a
?crit :
> 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 xyz at xyz.xyz imap:
stats shrank: mcache 900988905 < 1039472051
> 
> St?phane
> 
> <dovecot.conf>
> 
>