RE: RFC 4408 Errata - PermError on invalid domains after macro expansion

"Murray S. Kucherawy" <[email protected]> Tue, 25 Oct 2011 02:38:46 -0700
Newsgroups gmane.mail.spam.spf.discuss
Message-ID <F5833273385BB34F99288B3648C4F06F19C6C14C83@EXCH-C2.corp.cloudmark.com>
> -----Original Message-----
> From: Frank Ellermann [mailto:[email protected]]
> Sent: Monday, October 24, 2011 10:05 PM
> To: [email protected]
> Subject: Re: [spf-discuss] RFC 4408 Errata - PermError on invalid domains after macro expansion
> 
> Is there any chance
> to deprecate local part macros in 4408bis as known
> trouble-makers?

If we are to apply typical IETF procedure for advancement of stuff up the standards track, then it's fine to remove stuff from a protocol if it can be shown that they're not in any kind of widespread use.

Does anyone have a survey of SPF records using local part macros versus total SPF records?  If that ratio is very small, it's safe to remove.