o18.eu-dev-1.smtp.magentosite.cloud IXFR zone transfer

Changes since SOA version

IXFR is a zone transfer request that returns changes since a specific SOA version. Enter the SOA version to request changes since then.

Not an apex domain The domain o18.eu-dev-1.smtp.magentosite.cloud is not the root of its zone.
Instead, try zone transfer on magentosite.cloud .