Published MX host lacks completed A and AAAA DNS answers
ShipReady found one or more published MX hostnames that completed DNS lookups with neither an A record nor an AAAA record.
Why it matters
An MX hostname with no observed address records is a DNS configuration signal to review. The scanner does not attempt a mail connection, so the finding must remain separate from claims about actual SMTP service or delivery.
How ShipReady detects it
What it inspects
ShipReady obtains the organisational domain's MX hostnames, queries A for each host, and queries AAAA only when the A lookup completed with no addresses.
What triggers a finding
The rule triggers for each MX hostname whose completed A and AAAA lookups both return no addresses. Any failed address lookup is inconclusive and excludes that host from the finding.
What the evidence shows
The listed MX hostname had neither A nor AAAA addresses in ShipReady's completed DNS lookups.
Limits of this check
ShipReady does not test SMTP connectivity, MX priority behavior, mail-server health, fallback delivery, provider routing, or whether any real message bounced or was delivered.
How to fix it
Confirm each published MX hostname
Review each host in the published MX set against the intended mail-provider configuration, including any retired hosts.
Restore the intended address record or remove the host
Correct the MX or address records through the responsible DNS and mail-provider configuration after confirming the intended receiving topology.
How to verify the change
Verify address records
Query A and AAAA records for every published MX hostname after DNS propagation.
Expected: Each active MX hostname has the intended resolvable address records.