On Mon, 8 Apr 2019 at 18:31, Ntek, SIA Janis <i...@ntek.lv> wrote: > Thank you for quick responses! > > Dominic Raferd's reply was the most helpful and a good how-to :) > > Just to summarize, how many From sender spoofing methods are there? > 1) envelope-sender (What Viktor said) > 2) Addres in Header From (What Dominic said) > 3) Privileged domain in text of *Header From* (What Dominic said) >
I don't think there is a definitive list because as soon as there is, those lovely people out there will think of a new way round it. Here's another type of From header spoof: From: Dominic Raferd <f...@sender.tld> Another trick of theirs is to set From Header text in some encoding because postfix doesn't decode before processing. But spamassassin does.
