That's not them doing something wrong though. There's nothing wrong in hosting a server at home. The problem is clearly the black/grey lists if they black/grey list residential IPs just because.

Might want to check the Terms of Use / AUP on your Residential service, because every one I have ever read says you can not host email, and 80% of them say you can host any server of any kind.

Now most of them do not actually enforce it unless you become a problem, but most of them do put active measures on the network to stop SMTP Servers

For example here is a Exerpt from Comcast AUP prohibiting email and web hosting [1]

>>>use or run dedicated, stand-alone equipment or servers from the Premises that provide network content or any other services to anyone outside of your Premises local area network (“Premises LAN”), also commonly referred to as public services or servers. Examples of prohibited equipment and servers include, but are not limited to, email, web hosting, file sharing, and proxy services and servers;

[1] https://www.xfinity.com/corporate/customers/policies/highspe...

Google Fiber AUP[0] allows for hosting of anything for non-commercial purposes. Email is allowed as long as the email sent is not "unsolicited bulk commercial email". Time to update that worldview :) Every time we repeat something like "no one allows self hosting", the more people that will hear it and repeat it and make it a self fulfilling prophecy.

[0] https://fiber.google.com/legal/accepteduse/residential/

> Time to update that worldview :)

Why? Google Fiber is Available to less than 1% of US Households. Comcast is the largest Residential ISP last I looked in about 60-70% of US Markets...

ATT has the same policy, and I believe most of the other Cable Providers do as well. My guess would be over 90% of Residential Internet Plans today have a policy inline with Comcast not Google Fiber

Pointing to an outlier to the norm does not mean i need to update my worldview at all.

Regardless, “every one I have ever read” is no longer true. “Almost every one I have read”, perhaps?

I looked for market share info on Google Fiber but was unable to find it. Mind sharing your source?

i don't know about that. i've always used leased gigabit connections for my email. this article is about Hetzner specifically, which I've leased tons of servers and additional IPs from. AFAIK you don't know the IP you'll be getting until you pay for it unless things have changed recently.