Re: Possible ambiguity in SMTP RFC2821 - your opinon please

John C Klensin wrote:

> 2821bis clearly permits single-component (TLD-only) domains
http://www.openspf.org/?action=browse&diff=1&id=RFC_4408/Errata

If 2821bis permits it it can't be an 4408-erratum.  Of course
it's still not possible to use TLDs directly in an SPF policy,
RFC 4408 is based more on RFC 3696 and 2821 than 2821bis for
obvious reasons.

 Frank