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>It's not "your" IP address, it's DigitalOcean's IP address. And DigitalOcean is unwilling or unable to police their IP address space, so you've been lumped in
by grepfru_it 3y ago
>It's not "your" IP address, it's DigitalOcean's IP address. And DigitalOcean is unwilling or unable to police their IP address space, so you've been lumped in with the other bad actors inside 45.55.0.0/16.
It's not an arbitrary search space, it's usually a /24 to easily disqualify noisy neighbors and in addition the reputation of ips registered in the ARIN record. I would urge everyone to register any IP block they use that's more than a /29. To the end of this story, I have successfully sent email to microsoft servers from my /27 and /28 because (a) the /24 i'm on is not spammy and (b) my entire netblock is not spammy.
But even then I get certain random companies/universities that will flat out reject my email because I'm not going through one of the big 5 mail senders. I gave up, still host my own email but relay my mail through an O365 exchange server
- Clubber 3y agoThe problem is Microsoft is unwilling to unblock you even if you contact their support and jump through all the hoops to show you aren't a bad actor. They are of course incentivized to do this by cost cutting and in the hopes people will use their service rather than self host. I don't want to further incentivize their behavior so I refuse to use them. All my self hosted emails go to Apple and Google inboxes just fine.