On Tue, May 31, 2022 at 09:02:12PM +0200, Matus UHLAR - fantomas wrote: > for hotmaul.com and hormail.com use simple check_sender_access and > check_recipient_access.
Or check the recipient domain in the application that receives the e-mail addresses. Just reject everything that does not have a MX. Yes, that's a standard violation. Bastian -- I'm a soldier, not a diplomat. I can only tell the truth. -- Kirk, "Errand of Mercy", stardate 3198.9