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SMTP Header modification


i want to remove the internal ip of our exchange server from the outgoing smtp mail header.

How is the syntax to create a correct rule for that?


I already enabled the Exchange Header Firewall but the internal ip remains in the first hop.


Never mind, i found out via trial & error

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  • Thanks for the birthday present, Revan!  I never noticed that 'Operation' was a drop-down box with a second choice "Delete header."

    Cheers - Bob

    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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