DNS recommendations - the paper
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Elmar K. Bins
ekb at ivm.net
Wed Nov 25 11:27:10 CET 1998
randy at psg.com (Randy Bush) wrote: > >>> @ IN SOA ns.isp.net. netmaster.isp.net. > >>> ( 1998100100 86400 3600 604800 345600 ) > >> s/netmaster/hostmaster/ see RFC 2142 > >> or, i think it was piet who recommended being conservative, and do not > >> relying on aliases, rather use a real mailbox name. > > So that person can safely go on a two-week holiday? > > I'd rather put in a real hostname and not rely on MX records Well, the point is, here the domain name points to the mail machine ;-) Does everybody agree that we should recommend an A-RR'd record here? > > (Remember that sendmail falls back to A records if it can't find any MX > > records for a host.) > > i think of it the other way, but with the same result. mail will be sent > to the (address in rdata of the) A RR unless some one put in an MX RR > because the (interface denoted in the) A RR can not accept mail. Let's put it this way: If MX records are found, mailers try to deliver there. If not, A records are used. So whichever way you put it, if MX records are existent, they will get in your way ;-) Elmi.
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