MX-IP-LITERAL
MX points at an IP address
What it means
MX targets must be hostnames. An IP literal is invalid and is ignored by compliant senders.
How to fix it
- 1Create an A record (mail.yourdomain) for the address and point the MX at that name.
Re-check after the change
DNS changes can take up to the record's TTL to be seen; use Re-run on the result page to bypass our 10-minute cache.