Initial commit.

postfix/header_checks

@@ -0,0 +1,20 @@
+# Based on implementation of @JoshData (initially by @mkropat) for Mail-in-a-Box Project
+# https://github.com/mail-in-a-box/mailinabox
+
+# Remove the first line of the Received: header. Note that we cannot fully remove the Received: header
+# because OpenDKIM requires that a header be present when signing outbound mail. The first line is
+# where the user's home IP address would be.
+#/^\s*Received:[^\n]*(.*)/  REPLACE Received: from authenticated-user (mail.898.ro [127.0.0.1])$1
+
+# 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
+
+# Remove Postfix from headers
+/^(.*)\(898MTA\)(.*)/ REPLACE ${1}${2}