# List the names of the filters that you want to use
# in this file.

# debug: prints debugging information to the mail log.
# debug

# log_aliases: logs info about the alias used to reach recipients
# log_aliases

# noduplicates: checks for duplicate recipients which may occur due to alias
#	expansion, and removes the duplicates.
# noduplicates

# clamav: scans each message MIME part with the ClamAV virus scanner
# clamav

# auto_whitelist: tracks messages sent by authenticated senders, and
#	exempts reply messages from further filtering.
# auto_whitelist

# whitelist_relayclients: exempts IP addresses for which you relay from
#   further filtering.
# whitelist_relayclients

# whitelist_auth: exempts users who authenticate from further filtering.
# whitelist_auth

# whitelist_block: exempts IP addresses and networks which have an empty
#  BLOCK value in smtpaccess.dat
# whitelist_block

# whitelist_dnswl: exempts IP addresses listed in a DNS whitelist
# whitelist_dnswl

# whitelist_spf: exempts senders whose SPF records approve their address.
# whitelist_spf

# deliveredto: checks for Delivered-To header with local domains
# deliveredto

# privateaddr: restricts addresses to specific senders
# privateaddr

# spfcheck: checks the sender against SPF records.
# spfcheck

# nosuccessdsn: checks for senders who request a notice on successful
#	delivery, and remove any delivery notice requests found.  This
#	eliminates notices to spammers who can't receive them anyway,
#	and increases the privacy of your system.
# nosuccessdsn

# localsenders: validates sender addresses if they are locally hosted.
# localsenders

# comeagain: issues a temporary failure notice to senders who haven't been
#	seen before.  This blocks most spam engines and viruses.  It's a
#	simplified version of greylisting.
# comeagain

# greylist: A more complete implementation of the strategy described here:
#	http://projects.puremagic.com/greylisting/whitepaper.html
#	greylist and comeagain should not be used together.  This
#	implementation is based on one written by Georg Lutz:
#	http://www.georglutz.de/wiki/CourierServer
# greylist

# dialback: checks the envelope sender's address to make sure that a bounce
#	or reply can be delivered.  Mail from addresses that can't be verified
#	will be refused.
# dialback

# ratelimit: tracks the number of messages received from a remote host during
#	a specified time interval and issues temporary failure notices to hosts
#	that send too much.
# ratelimit

# attachments: checks message MIME parts against a regex listing forbidden
#	patterns in the filename or name Content-type parameters.
# attachments

# spamassassin: scans messages using "spamc".  This requires that
# SpamAssassin's daemon is running.  Note that all mail will be filtered
# under the settings for courier's user, which means that your users'
# individual whitelists and thresholds won't be processed.
# spamassassin

# quota: checks the maildir quota for each local recipient, and temporarily
#  refuses messages if any recipient is over quota
# quota

# add_signature: examines the AUTH information for authenticated senders,
#  and adds a signature to the message body if the domain in the AUTH
#  information is listed in the "domains" dictionary.  This dictionary can
#  be customized in the pythonfilter-modules.conf file.  It should be a
#  mapping of domains to the paths of plain text files which will be used
#  as signatures.
# add_signature

# noreceivedheaders: removes the first Received header from messages
#  sent by authenticated senders.  This should effectively remove any
#  identifying information about those senders.
# noreceivedheaders