Existing E-Mail-Address: 550 5.1.1 Address does not exist

Hi all,

I’m using Cloudflare’s Email Routing-Service. Everything works fine for long existing adresses.
But mails to fresh created adresses cannot be delivered:

(Address disguised)

host route1 . mx. Cloudflare . net [2606:4700:f5::d]
SMTP error from remote mail server after RCPT TO: [email protected]
550 5.1.1 Address does not exist.

Has anyone the same problem?

Greetings
Michael

5 posts were merged into an existing topic: 550.5.1.1 Domain does not exist - Email Forwarding