550 5.1.2: bad destination system address (domain not found)
The domain in the address does not exist or cannot receive mail.
Permanent failure (hard bounce)
What 550 5.1.2 means
The sending or receiving server could not find a valid mail destination for the domain after the @. The domain may be misspelled, expired, or have no mail servers (no MX record).
Common causes
- A typo in the domain (gmial.com)
- An expired or never-registered domain
- A domain with no MX or A record
- A DNS problem at the recipient's domain
How to fix it
- Check the spelling of the domain
- Look up the domain's MX records with an MX lookup tool
- Remove the address if the domain does not exist
What to do with the address
Remove it, or correct it if the domain is an obvious typo of a popular one (gmial.com to gmail.com).
Check an address now with the free email checker, or look at a domain's mail setup with the email domain checker, MX lookup and SPF checker.
Related error codes
Frequently asked questions
- What does 550 5.1.2 mean?
- The domain in the address does not exist or cannot receive mail. The sending or receiving server could not find a valid mail destination for the domain after the @. The domain may be misspelled, expired, or have no mail servers (no MX record).
- Is 550 5.1.2 a hard bounce or a soft bounce?
- Permanent failure (hard bounce). The address will keep failing, so remove it.
- What should I do with the address after 550 5.1.2?
- Remove it, or correct it if the domain is an obvious typo of a popular one (gmial.com to gmail.com).