[jeffbee]

These anecdotes are heartwarming but in the end useless as advice. If your mail is getting through it only means that there are no spammers on your network, i.e. you are lucky. Having an abusive mailer on your network (IP subnet, ASN, or even sharing your registrar) could happen at any time, with unknown impact to your IP reputation and deliverability of your mail.

[codegladiator]

I feel there is a lot of fear mongering around deliverability of emails all over the Internet which is helping the big companies to centralise a thing like email.

I have had my own email server sending emails which were not marked as spam. also I have had cases where email from Gmail addresses/ips would be actually spam.

I urge everyone to start using their own mail servers so the ecosystem around self hosting emails becomes super smooth.

why do receivers still rely on ip addresses when we have dkim and spf?

[jeffbee]

If it wasn't an effective feature for classifying spam, then people wouldn't use it. But, in reality, it's incredibly effective because the only people who want to use residential IPs and rent-a-server IPs for running mailers are criminals and a much smaller population of dorks.

[codegladiator]

I agree lists are definitely effective but its a cat and mouse game sort of with a lot of overhead. We can still use ip lists for accepting/rejecting mail but that should be the lowest priority check with very less weight.

Lists are like the DRM kind of tech, where the genuine user has the real headaches (pay a service to filter my mail, cant self host etc) while the spams are still flowing through.