On Fri, Mar 11, 2022, Stefan Hagen wrote: > > > 550-5.7.26 This message does not have authentication information or > > > fails to
> Authenticated in this context means, you don't have SPF / DKIM / DMARC set up. [more off-topic/rant] Isn't it nice how Google et.al. enforce things which are neither mandatory nor really useful to "fight spam"? All the spam I get at $WORK is from gmail and it has passed all of those "requirements" -- but the "investment"/"loan"/... spam/scams are not filtered at all by Google themselves (hey, why should they do outbound spam filtering? it cost them money and why should they care? it's not like anyone important would block gmail -- but Google rejects mail coming to them due to bogus reasons). "Solution": ask gmail users to switch to other services which do not have so many "false positives". PS: maybe there is an option in gmail for users to whitelist senders from whom they want to receive mail?
