Alex van den Bogaerdt wrote:
This kind of confusion causes people to think they have published
SPF for all of their hostnames (I'm avoiding domain here) because
when they're told to publish SPF for a domain, they assume a domain
is a collection of hostnames all ending in ${zone_they_got_from_ISP}
Oh yes, I got that wrong for claranet.de back in May 2004, because I
thought it's "obviously" how it should be... :-) Took me four weeks
to figure that out.
Microsoft is, IMHO, feeding this misconception.
Depends on what you're talking about. If it's about the hosts in a
domain it would be clumsy to say subdomain. And with something like
xyzzy.claranet.de it's neither a host nor a subdomain, it's only a
wildcard. In RFCs it's of course important to get the terminology
right.
Frank
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