See whether your MX record change has spread: 12 public resolvers, queried live, side by side.
Map key: each dot is the country where a resolver's operator is headquartered (number = resolvers), coloured by result. It does not show where the query ran — most of these resolvers are anycast networks with servers in many cities.
These are 12 large public resolvers, queried live over encrypted DNS-over-HTTPS from our servers. Most are anycast networks with many locations, so we show which resolver answered — not a city. Two (CIRA Canadian Shield) are run by the organization that operates .ca. Your ISP's resolver may still show an older answer until its cache expires.
MX records tell the world which mail servers accept email for your domain, each with a priority number (lower = tried first). Changing them is how you move email to Google Workspace, Microsoft 365 or another provider.
Type your domain in the box above, keep MX selected and press Search. We ask 12 public DNS resolvers — including two run by CIRA Canadian Shield — at the same moment and show each answer side by side.
All green rows should list the same mail hosts with the same priorities. Different sets on different resolvers means some senders may still deliver to your old mail server, so keep the old mailbox active until every row matches.
Typically minutes to a few hours, up to the old TTL. Keep the old mail service running until all resolvers agree.
Not if you keep both mailboxes available: during propagation, mail may arrive at either server.
SPF, DKIM and DMARC TXT records, so the new provider's mail passes spam checks.