North American Network Operators Group

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Re: Weird DNS issues for domains

  • From: Petri Helenius
  • Date: Thu Sep 29 13:27:23 2005

John Dupuy wrote:


If you are talking about strictly http, then you are probably right. If you are hosting any email, then this isn't the case. A live DNS but dead mail server will cause your mail to queue up for a later resend on the originating mail servers. A dead DNS will cause the mail to bounce as undeliverable. (Oh, and if any of your subs are on mailing lists, they will be unsubscribed en masse. A nice way to challenge your call center...)


A MTA bouncing mail on temporary DNS failure would be out of spec, horribly.

Pete