Hi I have a postfix with mysql and now I have add maildrop , where single user have a own mailfilters. To test I create a global maildroprc, it's have : logfile "/var/spool/postfix/maildrop/maildrop.log" VERBOSE="9" DOMAIN=$1 USER=$2 DEFAULT="/usr/local/virtual/$DOMAIN/$USER/" #VHOME="$HOME/$1/$2" MAILDIR="$DEFAULT" if ( $SIZE < 26144 ) { exception { xfilter "/usr/local/bin/spamassassin" } } if (/.*X-Spam-Flag\: Yes/:h) { exception { to "$MAILDIR/.Spam/" } } else { exception { to "$MAILDIR/" } } and when I have run a maildrop with user maildrop , I get error maildrop -V 4 -d [email protected] < /var/spool/postfix/maildrop/test maildrop: authlib: groupid=126 maildrop: authlib: userid=126 maildrop: authlib: [email protected], home=/usr/local/virtual, mail=cablenet.one.pl/test/ maildrop: Changing to /usr/local/virtual Message start at 0 bytes, envelope [email protected] /usr/local/etc/maildroprc(1): Opening logfile /var/spool/postfix/maildrop/maildrop.log /usr/local/etc/maildroprc(2): VERBOSE="9" maildrop: Unable to open mailbox. Why unable to open mailbox? I have a Maildir format -osanet