On 7/16/23 17:57, Benny Pedersen wrote:
back to basic:why accept local envelope SENDER domains on port 25 ? its safe to reject them its not a question on spf or stupid srs rewrites
That's actually a great point. So you're saying to tell sendmail to reject emails purporting to come from me if they come from another mail server?
Got a pointer to documentation on how to do that? I'm all ears. Thomas