[Dovecot] Error : File too large

Hi ,

When accessing mails through webmail(roundcube), we were getting below error's in huge

Please help to know .. what this error is related to..

dovecot version , we are using is 2.1.15

Mar 28 15:37:47 imapserver dovecot: imap(cel_default): Error: rename(/mail/mailstore/linoquery.com/lino_default/Maildir/new/1364463180.M563166P30867.imapserver,S=3263,W=3309, /mail/mailstore/linoquery.com/lino_default/Maildir/cur/1364463180.M563166P30867.imapserver,S=3263,W=3309:2,) failed: File too large

Thanks, Kavish Karkera