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Getting rid of forged mails usign e-mail authentication (solution with acl)

Discussion in 'E-mail Discussions' started by Un Area, Nov 21, 2012.

  1. Un Area

    Un Area Well-Known Member

    Nov 16, 2006
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    Im having the problem that some users set weak passwords in their email account that can be easily hacked using dictionary attack.
    Then the spammer sends something like using the authenticated id login of the hacked account ex., and the email pass through without a problem.

    So I want to compare that the FROM: matchs the Authenticated_id of the sender, for example if dont match with (the mail is refused) if equals -> pass ok.

    I searched over google and I found this rule, but when I set it to exim doesnt works, email goes through anyways using a forged email address. I dont know if this is the complete rule or its missing a $h_from: parameter or something.

    Have anywone tryed this before and what is missing here???

    authenticated = *
    !condition = ${if eq{$sender_address}{$authenticated_id}{no}{yes}}
    message = The sender name must be the same as the login id

    #1 Un Area, Nov 21, 2012
    Last edited: Nov 21, 2012

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