mx1-int.mail.strath.ac.uk 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 mx1-int.mail.strath.ac.uk is not the root of its zone.
Instead, try zone transfer on strath.ac.uk .