Publish the MX hosts and priorities supplied by the mail provider in PD BIND 9 DNS. An MX record routes inbound mail towards a mail server; it does not create mailboxes or configure outgoing-message signing.

Prepare the complete mail configuration

Keep the current MX set and obtain the replacement provider’s exact hostnames, priorities and any supporting records. Confirm the destination mail service is ready before a cutover. An MX target is a mail-server hostname, not a mailbox address or web URL.

Update the zone

1. Open the intended zone’s Records view and filter for MX.
2. Review every current MX value at the affected name.
3. Add or edit each intended record using Name, Priority, mail-server hostname and TTL.
4. Remove obsolete destinations only as part of the agreed mail move.
5. Read back the full resulting MX set and the saved TTLs.

Lower numeric priority is preferred; equal priorities can offer multiple destinations. Leaving an old MX in place can continue routing some mail there. Review the mail provider’s complete intended set rather than treating one new row as a replacement for all existing values.

Check delivery

Verify authoritative MX answers and then test actual delivery after the expected cache transition. Confirm the mail hosts resolve and accept mail separately from DNS publication.

If DNS is correct but mail fails, retain a redacted bounce or delivery result for the mail administrator. Repeatedly changing MX does not repair a missing mailbox, relay restriction or signing problem. Use the SPF, DKIM and DMARC guide for sender-authentication records.

If the change cannot be activated

A successful validation and file write are separate from the running BIND service loading the change. If the result reports an activation or reload failure, preserve the exact redacted message and ask the server administrator to investigate. Check current records before repeating the write; do not assume an error means nothing changed.

See the PD BIND 9 DNS Blesta guide for related tasks, or explore the module.