Even IPs that aren't sent any email in last 3 months.
Then one day the problem just disappears and I was able to send email just fine. Till this day, I still don't know what happen.
Another similar service is apple icloud, which I think even much more worse than Hotmail. At least, hotmail give you a portal that you can see some data.
With the announcement of apple icloud email service, I imagine people who are self-hosted email gonna have a lot issue with them.
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I run an email forwarding service https://hanami.run and I used to had this exact problem.
They had a dedicated page at https://sendersupport.olc.protection.outlook.com/snds/data.a... that supposed to be used for these delivery issue. I tried to submit multiple requests from there.
Even IPs that aren't sent any email in last 3 months.
Then one day the problem just disappears and I was able to send email just fine. Till this day, I still don't know what happen.
Another similar service is apple icloud, which I think even much more worse than Hotmail. At least, hotmail give you a portal that you can see some data.
With the announcement of apple icloud email service, I imagine people who are self-hosted email gonna have a lot issue with them.
What announcement?
iCloud has had a E-Mail service for over 10 years now. iCloud was doing email back when it was called MobileMe.
They started to introduce support for custom domain. That means many will switch to them, for the convenience of the ecosystem.
So that means one more awkward email providers we have to deal with :)
Ah understood.
Apologies, I misunderstood what you were trying to say.
Thanks for clarifying :)