Is this sarcasm? As the gmail part is completely false. Relaying used to be a thing, before spammers and unwillingness to deal with it at the source (boot infe

Is this sarcasm? As the gmail part is completely false. Relaying used to be a thing, before spammers and unwillingness to deal with it at the source (boot infected devices, originating AS / IX, .. ) resulted in a choice between a game of whack-a-mole or only accepting gmail¹. These days, relaying has to be setup on the specific relay server, the originating address needs to permit it (DNS SPF/DKIM/DMARC/whatever), and the relay server will still have a reputational problem with deliverability to unrelated servers, which is problematic even for direct mail, unless you are gmail¹. ¹ usually gmail + varying number of big players