Search Again: Re: untitled From: Len Conrad Date: Monday, July 14, 2003 Time: 4:51:19 pm >I had a question about that cheesy DNSReport.com sites sometimes >inaccurate results. It gives misleading advice in some areas. >I had the following warning for one of our domain names. > > >"WARNING: You have 8 nameservers. RFC1912 2.8 recommends that you have >no more than 7 nameservers." typical "WARNING". The kind of "mass market" people that use DNSreport now go off, mostly blindly, on a wild-goose chase to "fix" this warning. >paragraph in RFC1912 where this is covered. I am really curious to know >what ill affects can come from having more than 7 name servers. You can have as many as you want, but you must respect, and this is the only hard technical point in RFC1912's flabby paragraph, the limit of 512-bytes per DNS UDP packet, or you will be forcing your DNS and its queriers to use TCP to obtain the too-big answers that are truncated at 512-bytes ('tc' bit in the DNS packet header). Len

Messages In This Thread: untitled by Mark Swalwell on Jul 16, 1997 at 6:54:00 am untitled by Jeff Malloy on Nov 25, 1997 at 1:40:00 pm untitled by Jerry L. Pasker on Sep 3, 1998 at 6:56:00 pm untitled by John Draper on Jan 25, 1999 at 9:53:00 pm untitled by Per Pettersson on Aug 17, 1999 at 5:22:00 am untitled by Phillip D Sanders on Jan 20, 2000 at 4:49:00 am untitled by ATAnet Internet Solutions on Feb 20, 2000 at 5:58:00 pm untitled by Asle Benoni on Jan 1, 2001 at 5:09:36 am untitled by Philip Butler on Sep 14, 2001 at 10:49:26 am Re: untitled by Philip Butler on Sep 17, 2001 at 2:50:09 pm untitled by Jim Cobb on May 3, 2002 at 7:53:59 pm untitled by Peggy Thomson on Mar 10, 2003 at 12:45:45 pm untitled by Mia''s Virtual Post Office on Jul 14, 2003 at 3:44:28 pm Re: untitled by Len Conrad on Jul 14, 2003 at 4:51:19 pm