# This configuration was copied from Mailinabox. The original version is available at:
# https://raw.githubusercontent.com/mail-in-a-box/mailinabox/master/conf/postfix_outgoing_mail_header_filters

/^\s*Received:[^\n]*/	IGNORE

# Remove other typically private information.
/^\s*User-Agent:/        IGNORE
/^\s*X-Enigmail:/        IGNORE
/^\s*X-Mailer:/          IGNORE
/^\s*X-Originating-IP:/  IGNORE
/^\s*X-Pgp-Agent:/       IGNORE

# The Mime-Version header can leak the user agent too, e.g. in Mime-Version: 1.0 (Mac OS X Mail 8.1 \(2010.6\)).
/^\s*(Mime-Version:\s*[0-9\.]+)\s.+/  REPLACE $1