smtp auth

  1. T

    Prevent anonymous users from sending through my PMG?

    Hello. I'm using PMG as a mail proxy for my Exchange mailserver. Yesterday I noticed that it's possible to send mails anonymously from the domains listed in my relay domains, to any other domain listed in my relay domains. I tested from an unrelated external network, and i was able to send...
  2. A

    Selective smarthost (based on recipient, say or

    We've been using PMG for a couple of weeks but today I saw our IP address seems to be on a Microsoft blocklist - ignore this part, how to get unblocked is not the reason why I am posting. Rather, I'd like to see how to get PMG to work with selective smarthosts or possibly some other suggestions...


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