How do I fix a Zoho Mail domain showing 'address not found'?

An address not found bounce usually means mail is not reaching Zoho, or Zoho has no mailbox or alias for that address. Check that your domain's MX records point to Zoho for your data centre, that old MX records are removed, that the domain is verified, and that the user, alias or group exists. DNS changes can take time to spread.

Start with MX records. Look up your domain with a DNS tool and confirm the MX entries match those in the Zoho Mail admin console, including the right data centre. If an old provider's MX records remain, some mail goes there and bounces. Remove them, and lower the TTL beforehand if you are changing providers.

Next, check Zoho. The domain must be verified and active, and the address must exist as a user, an alias or a group. A typo in an alias or a deleted user produces this bounce. If you want mail to unknown addresses delivered somewhere, set a catch-all, though that can attract spam.

Finally, read the bounce message. It names the server that rejected the mail, which tells you whether the problem is DNS or Zoho. If MX and mailbox are correct and bounces continue, send Zoho support the bounce headers so they can trace it.

Written by Flowpeak, a Zoho implementation partner. Zoho pricing and features change, so confirm current details on the official Zoho site. Free checklists | Ask us a question