On Tue, 13 Oct 2020, Bill Cole wrote:
On 13 Oct 2020, at 15:02, Fred Morris wrote:
Hello. Real example of someone with this setup, and all records for the
FQDNs in question, or it didn't happen.
Waving at Fred...
billmail.scconsult.com. 10800 IN MX 0 clues.scconsult.com.
billmail.scconsult.com. 10800 IN MX 10 grumpy.scconsult.com.
scconsult.com. 86400 IN MX 10 sc1.scconsult.com.
scconsult.com. 86400 IN MX 1 toaster.scconsult.com.
Perfect, thanks! billmail.scconsult.com is not delegated from
scconsult.com (has no SOA or NS), and sccconsult.com is delegated from
.com (of course), with SOA and NS.
Bonus points: billmail has SPF.
(I'll assume that it works, since you're subscribed from
@billmail.scconsult.com. I probably wouldn't set it up that way.)
--
Fred