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07beef3db2
Modify outgoing_mail_header_filters and mail-postfix.sh files to result in the primary hostname, and the public ip of the server showing in the first mail header route instead of unknown and 127.0.0.1. This could help lower the spam score of mail sent from your server to some public mail services.
15 lines
726 B
Plaintext
15 lines
726 B
Plaintext
# Remove the first line of the Received: header. Note that we cannot fully remove the Received: header
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# because OpenDKIM requires that a header be present when signing outbound mail. The first line is
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# where the user's home IP address would be.
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/^\s*Received:[^\n]*(.*)/ REPLACE Received: from authenticated-user (PRIMARY_HOSTNAME [PUBLIC_IP])$1
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# Remove other typically private information.
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/^\s*User-Agent:/ IGNORE
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/^\s*X-Enigmail:/ IGNORE
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/^\s*X-Mailer:/ IGNORE
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/^\s*X-Originating-IP:/ IGNORE
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/^\s*X-Pgp-Agent:/ IGNORE
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# The Mime-Version header can leak the user agent too, e.g. in Mime-Version: 1.0 (Mac OS X Mail 8.1 \(2010.6\)).
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/^\s*(Mime-Version:\s*[0-9\.]+)\s.+/ REPLACE $1
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