On Fri, Feb 16, 2024 at 3:56 PM Bill Cole via mailop <[email protected]> wrote: > > What is this current attitude on using something like > > Postfix's `reject_unverified_recipient`? > > ONLY use this when you are relaying for specific domains that you > service where you do not have any way to obtain a definitive user list. > > > Does probing for recipients work these days, is it considered abusive? > > Probing for recipients on systems where you do not have explicit prior > permission to do so is asking to be treated like a criminal. It also > tends not to work. > > The same goes for sender verification.
Very helpful advice, thanks Bill _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
