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Hi experts, Newbie query of sorts. I've ben asked to ensure that emails sent from a server have the security caveat of [SEC=UNCLASSIFIED]. Unfortunately google searching shows me all emails ...
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  1. #1
    Just Joined!
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    Jul 2012
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    How do I add [SEC=UNCLASSIFIED] to subject automatically.


    Hi experts,

    Newbie query of sorts.

    I've ben asked to ensure that emails sent from a server have the security caveat of [SEC=UNCLASSIFIED].
    Unfortunately google searching shows me all emails where users have [SEC=UNCLASSIFIED] in their subject.

    I have tried searching 'rhel subject security caveat', 'rhel [sec=unclassified]' and many other iterations, without success.

    So, how can I add a particular security caveat to the subject line automatically?

    Thank you in advance.
    Craig.

  2. #2
    Linux Newbie nplusplus's Avatar
    Join Date
    Apr 2010
    Location
    Charlotte, NC, USA
    Posts
    106
    Hey, Craig,

    Look into using the Postfix mta (The Postfix Home Page), specifically the header_checks function (Postfix manual - header_checks(5)).

    N

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