[skoskie]

Is this not the logical result of fighting spammers? It’s easier to trust messages coming from mega corp when you know mega corp has invested in mechanisms that ensure their systems aren’t being used to send spam. I certainly don’t like the negative impact on people who choose to self host, but I also don’t see it as an intentional effort to shut out legitimate emails.

Case in point a bit further down in the comments: https://news.ycombinator.com/item?id=43902653

[sigmaisaletter]

It's always good to have an alternative reason beyond "we want to crush the competition", especially if one of these pesky anti-trust lawsuits comes around.

It's very easily possible for both to be true, there is a "fight spam" reason and there is also a "monopoly" reason, and of course unless you very stupid you never mention the second.

[BenjiWiebe]

Their systems still do send spam. Yes probably an extremely low percent, but I do see @gmail.com spam.