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The view is that most emails are becoming centralized to come from a few places. So email hosts like microsoft and google take shortcuts to stop spam by untrust
by codexon 5y ago
The view is that most emails are becoming centralized to come from a few places. So email hosts like microsoft and google take shortcuts to stop spam by untrusting any IP they haven't seen sending emails for 5 years (this is just a random number, no one knows what the real filters are).
- Breza 5y agoI work in a company that sends millions of emails every month through our own server. We moved to new IPs last year and didn't see a big disruption. The key is having a high quality list and only ever sending things that people actually asked you to send.