email routing : failed to initalize: permanent error (550): 5.1.1 Address does not exist
Hello, i started using cloudflare few days agoo for email routing. my domain name and email inbox are from IONOS. the destination email address was verified, i configured DNS records and nameservers. and i added a custom address . but i get "(550): 5.1.1 Address does not exist" error each time i try to test the routing.
