@stefano the vast majority of spam that gets through my spam filters comes from gmail. It is difficult to block as it looks legit dkim and spf-wise. Google may be good at inbound spam detection but they are atrocious at outbound, I am fortunate that I am able to downscore gmail mails because of my size and client base, but many won't be able to. Maybe everyone should though!

Toby Bryans
@tobybryans@mastodonapp.uk