protocol lmtp {
 # Space separated list of plugins to load (default is global mail_plugins).
# this is why we did not need to edit Line 7 in 90-sieve.conf - you add it HERE 
postmaster_address = postmaster@yourdomain.org
# SMTP guides it to the server, but LMTP guides it to the folder you want
 mail_fsync = optimized
#if this is not enabled, mail will NOT sort
mail_plugins = $mail_plugins quota sieve
 }