impersonating

Hey all! I've been looking around the forum and searched quite a bit myself, but can't seem to find someone with a similar issue. We're experiencing emails with empty "senders" that do not show any senders in the tracking center. When receiving the email and inspecting it in the client, there...

Hi I have a question. I noticed in my PMG logs that someone attempted to send an email impersonating me to someone else, and it was rejected. I want to ensure that PMG consistently blocks such attempts. Is there a way to guarantee that these kinds of messages are always rejected/blocked...