# 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 # Remove typically private information. /^\s*(Received|User-Agent|X-(Enigmail|Mailer|Originating-IP|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