On Tuesday 09 December 2003 19:48, Richard O. Hammer wrote: > Søren Hilmer wrote: > > ... I am adding a > > DNSServer.findARecords method to do it (basically a copy/paste of > > findMXRecords). > > I find this very interesting, and I am working on code to deal with > it. But I don't want to step on Søren's toes. > > Within a day or two, I hope to post some code here which works -- as > far as I have been smart enough to test it. Then I hope to benefit > from the list's critical review of that code. I don't know enough > about DNS to feel sure of myself here.
I won't mind if you beat me on this one, but I do have working code here, what is holding me back (apart from some more testing) is wether it is done the best way. > > I want to confirm my understanding of "preferences". As Noel cited, > RFC 2821, section 5, says: > > The destination host (perhaps taken from the preferred MX record) may > be multihomed, in which case the domain name resolver will return a > list of alternative IP addresses. It is the responsibility of the > domain name resolver interface to have ordered this list by > decreasing preference if necessary, and SMTP MUST try them in the > order presented. > > I believe that these preferences pertain to the host targets of the MX > records. The hosts are ranked. Yes, that is my understanding as well. > > But, for any given host, if that host is multihomed, then the IP > addresses for that host are not ranked. They can be returned in any > order within the list of IP addresses for that host. Does that sound > right? Yes, A records are not ranked. --Søren -- Søren Hilmer, M.Sc. R&D manager Phone: +45 70 27 64 00 TietoEnator IT+ A/S Fax: +45 70 27 64 40 Ved Lunden 12 Direct: +45 87 46 64 57 DK-8230 Åbyhøj Email: soren.hilmer <at> tietoenator.com --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
