Since it looks like it is already in use (at least in some MTAs) I am willing to help to standardize this. However I lack an experience what to do if there is no smtp working group. Should I send it to apps area ml, or to chairs of apps area?
It seems to be overkill to start whole wg just to standardize one draft, isn't it? Ondrej On Fri, Apr 10, 2009 at 3:53 PM, Edward Lewis <ed.le...@neustar.biz> wrote: > At 2:08 -0700 4/10/09, SM wrote: > > It's called NULL MX. There is an expired I-D about it at >> http://www.ietf.org/proceedings/05aug/IDs/draft-delany-nullmx-00.txt The >> attempt to standardize the practice was viewed as a bad idea by the DNSEXT >> WG. >> > > There are three messages in the namedroppers archive about this. One post > says "send it to DNSOP." (So, it's about time. ;) ) > > But the draft really isn't about DNS. It's about SMTP. > > The MX RR will be ignored. There will be an AAAA DNS request and a >> fallback >> to the A RR for security.eu.debian.org. Newer versions of sendmail and >> Postfix will treat that MX RR as a bad MX and reject the message instead >> of retrying. >> > > ...it's about SMTP... Ondrej -- Ondrej Sury technicky reditel/Chief Technical Officer ----------------------------------------- CZ.NIC, z.s.p.o. -- .cz domain registry Americka 23,120 00 Praha 2,Czech Republic mailto:ondrej.s...@nic.cz http://nic.cz/ sip:ondrej.s...@nic.cz <sip%3aondrej.s...@nic.cz> tel:+420.222745110 mob:+420.739013699 fax:+420.222745112 -----------------------------------------
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