To:
dnsop@cafax.se
From:
Peter Koch <pk@TechFak.Uni-Bielefeld.DE>
Date:
Mon, 17 Sep 2001 16:33:43 +0200
In-reply-to:
Your message of "Mon, 17 Sep 2001 06:37:05 PDT." <E15iya9-000FH7-00@rip.psg.com>
Sender:
owner-dnsop@cafax.se
Subject:
Re: My first rough draft of my first I-D
Randy Bush wrote: > > specifications specifically cover this. If you use such an email > > address in an SOA record (for example), you must escape the dot: > > firstname\.surname@example.com > > huh? you are to the left of the @, i.e. in the local part, which has > zip to do with the dns. well, unless in RRs like SOA, MB, MG, MINFO or RP you have to encode the local part in a domain name. Especially ``dotted'' addresses in the SOA RNAME field have been causing problems for years. While in theory you can put the '.' into the label, escaping its special meaning, in practice this did (or probably does) often not work due to the way the data flows from the primary master (through slaves) to the application or user for final consumption. There are obvious other reasons to recommend not using a dotted address in e.g. the SOA MNAME but support the 'hostmaster' alias. However, there's no such reason for a general ban of local parts with '.' as the draft author proposes. -Peter