18 Dec
2009
18 Dec
'09
12:45 p.m.
On Fri, 18 Dec 2009, Jason Bertoch wrote:
Isn't the fundamental problem that SMTP can fall back to an implicit MX? None of these solutions will stop spammers from skipping MX records and using direct-to-host connections.
This has nothing to do with spam.
Shouldn't we just consider dropping the implicit MX back door as opposed to getting creative with MX records that spammers will surely note and avoid anyway?
It's impossible to make that kind of incompatible change with an installed base of billions of users. It's already impossible to eliminate the AAAA fallback and keep the A fallback. Tony. -- f.anthony.n.finch <dot@dotat.at> http://dotat.at/ GERMAN BIGHT HUMBER: SOUTHWEST 5 TO 7. MODERATE OR ROUGH. SQUALLY SHOWERS. MODERATE OR GOOD.