On 2022-06-26 21:23, Alex wrote:
Hi, I was surprised to see I received an email with localhost.localdomain as the envelope sender. It was a legitimate email, but not from my
This would have been stopped by http://www.postfix.org/postconf.5.html#reject_unknown_sender_domain (unless you have created "localhost.localdomain" as a valid record in your local DNS, which there is no reason to do.) -- http://rob0.nodns4.us/
