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CIRCLE WITH A DOT

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  3. I can pull mail addresses out of thin air.

I can pull mail addresses out of thin air.

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  • isotopp@infosec.exchangeI This user is from outside of this forum
    isotopp@infosec.exchangeI This user is from outside of this forum
    isotopp@infosec.exchange
    wrote last edited by
    #1

    RE: https://social.tchncs.de/@Lapizistik/116087161953914165

    I can pull mail addresses out of thin air.

    My mailer knows about

     local_part_suffix = +* : -*
    local_part_suffix_optional

    so you can mail to kris@..., but also to kris+keks@... or kris-keks@...

    They will all go to the kris user account,and there will be X-local-part-suffix: keks set for any mail to kris-keks@....

    Of course, I don't want all of that in my inbox.

    :0
    * ^X-local-part-suffix:.*kris-\/[^@]+
    $MAILDIR/.special.`echo $MATCH | sed -e 's!([^)]*)!!g' -e 's![^a-zA-Z0-9_-]!_!g' | tr A-Z a-z`/

    The what:

    Anything that matches X-local-part-suffix: kris-something@... will be caught by that rule.

    We take something from the rule, lowercase it, and replace all catacters that are not letters or numbers or _ or - with a _. We then push that into the folder INBOX/special/keks

    So mail to kris-keks@... goes to the folder INBOX/special/keks. If it doesn't exist we create it.

    isotopp@infosec.exchangeI lapizistik@social.tchncs.deL burak@gursoy.socialB 3 Replies Last reply
    0
    • isotopp@infosec.exchangeI isotopp@infosec.exchange

      RE: https://social.tchncs.de/@Lapizistik/116087161953914165

      I can pull mail addresses out of thin air.

      My mailer knows about

       local_part_suffix = +* : -*
      local_part_suffix_optional

      so you can mail to kris@..., but also to kris+keks@... or kris-keks@...

      They will all go to the kris user account,and there will be X-local-part-suffix: keks set for any mail to kris-keks@....

      Of course, I don't want all of that in my inbox.

      :0
      * ^X-local-part-suffix:.*kris-\/[^@]+
      $MAILDIR/.special.`echo $MATCH | sed -e 's!([^)]*)!!g' -e 's![^a-zA-Z0-9_-]!_!g' | tr A-Z a-z`/

      The what:

      Anything that matches X-local-part-suffix: kris-something@... will be caught by that rule.

      We take something from the rule, lowercase it, and replace all catacters that are not letters or numbers or _ or - with a _. We then push that into the folder INBOX/special/keks

      So mail to kris-keks@... goes to the folder INBOX/special/keks. If it doesn't exist we create it.

      isotopp@infosec.exchangeI This user is from outside of this forum
      isotopp@infosec.exchangeI This user is from outside of this forum
      isotopp@infosec.exchange
      wrote last edited by
      #2

      I merge all that together again in a single unread smart mailbox.

      But the folder is indicated at the top right.

      So I have a github mail in a github folder – likely legit.

      Now, a bank mail that is in a supermarket folder – that's fishy. Without even opening it I know I can delete it.

      Link Preview ImageLink Preview Image
      isotopp@infosec.exchangeI 1 Reply Last reply
      0
      • isotopp@infosec.exchangeI isotopp@infosec.exchange

        RE: https://social.tchncs.de/@Lapizistik/116087161953914165

        I can pull mail addresses out of thin air.

        My mailer knows about

         local_part_suffix = +* : -*
        local_part_suffix_optional

        so you can mail to kris@..., but also to kris+keks@... or kris-keks@...

        They will all go to the kris user account,and there will be X-local-part-suffix: keks set for any mail to kris-keks@....

        Of course, I don't want all of that in my inbox.

        :0
        * ^X-local-part-suffix:.*kris-\/[^@]+
        $MAILDIR/.special.`echo $MATCH | sed -e 's!([^)]*)!!g' -e 's![^a-zA-Z0-9_-]!_!g' | tr A-Z a-z`/

        The what:

        Anything that matches X-local-part-suffix: kris-something@... will be caught by that rule.

        We take something from the rule, lowercase it, and replace all catacters that are not letters or numbers or _ or - with a _. We then push that into the folder INBOX/special/keks

        So mail to kris-keks@... goes to the folder INBOX/special/keks. If it doesn't exist we create it.

        lapizistik@social.tchncs.deL This user is from outside of this forum
        lapizistik@social.tchncs.deL This user is from outside of this forum
        lapizistik@social.tchncs.de
        wrote last edited by
        #3

        @isotopp

        I could do this (and once had a setup like this) but for now I am completely fine with one personalized and catch-all address and some sieve-filters.

        I just create/use any local part I want (often with the name or url of the service I want to use) and then forget about it as I won't get many mails for it. I only add filter rules if they get hacked or sold their data to spammers (and it's interesting to see which email address gets used for what spam ;-).

        1 Reply Last reply
        0
        • isotopp@infosec.exchangeI isotopp@infosec.exchange

          RE: https://social.tchncs.de/@Lapizistik/116087161953914165

          I can pull mail addresses out of thin air.

          My mailer knows about

           local_part_suffix = +* : -*
          local_part_suffix_optional

          so you can mail to kris@..., but also to kris+keks@... or kris-keks@...

          They will all go to the kris user account,and there will be X-local-part-suffix: keks set for any mail to kris-keks@....

          Of course, I don't want all of that in my inbox.

          :0
          * ^X-local-part-suffix:.*kris-\/[^@]+
          $MAILDIR/.special.`echo $MATCH | sed -e 's!([^)]*)!!g' -e 's![^a-zA-Z0-9_-]!_!g' | tr A-Z a-z`/

          The what:

          Anything that matches X-local-part-suffix: kris-something@... will be caught by that rule.

          We take something from the rule, lowercase it, and replace all catacters that are not letters or numbers or _ or - with a _. We then push that into the folder INBOX/special/keks

          So mail to kris-keks@... goes to the folder INBOX/special/keks. If it doesn't exist we create it.

          burak@gursoy.socialB This user is from outside of this forum
          burak@gursoy.socialB This user is from outside of this forum
          burak@gursoy.social
          wrote last edited by
          #4

          @isotopp another email trick: create a new one on your own domain, set as the git commit email, verify if needed and then blackhole it.

          1 Reply Last reply
          0
          • isotopp@infosec.exchangeI isotopp@infosec.exchange

            I merge all that together again in a single unread smart mailbox.

            But the folder is indicated at the top right.

            So I have a github mail in a github folder – likely legit.

            Now, a bank mail that is in a supermarket folder – that's fishy. Without even opening it I know I can delete it.

            Link Preview ImageLink Preview Image
            isotopp@infosec.exchangeI This user is from outside of this forum
            isotopp@infosec.exchangeI This user is from outside of this forum
            isotopp@infosec.exchange
            wrote last edited by
            #5

            Yeah, about that US immigration requirement.

            "List all your mail addresses"

            How many lines does that form have?

            $ ls -ld Maildir/.special* | wc -l
            2369

            Because I have a spreadsheet for you.

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