Search Again: Re: Multiple CNAMES... who cares? From: Men & Mice Support Date: Thursday, July 29, 1999 Time: 11:09:00 am >Please explain to me why multiple CNAMES are "a bad thing." Here's what I >have: > >In the "bigcitybaby.com." domain: > >yosemite.bigcitybaby.com. A 207.226.9.115 >www.bigcitybaby.com CNAME yosemite.bigcitybaby.com >etc. > >And in the "propressinc.com." domain: > >www.propressinc.com. CNAME yosemite.bigcitybaby.com. >ftp.propressinc.com. CNAME yosemite.bigcitybaby.com. >mail.propressinc.com CNAME yosemite.bigcitybaby.com. >etc. > >What did I do wrong? And if I didn't do anything wrong, why is this >considered an error in the QuickDNS log? The records above, by themselves, do not constitute an error (aside from the missing period on mail.propressinc.com). However, given such records, the following would be an error: propressinc.com. MX 10 mail.propressinc.com. It is against the rules to have any hostname that appears as data in a record to have a CNAME record instead of an A record. The exception is another CNAME (chaining CNAMEs), but even that is generally considered bad practice. Furthermore, I checked your zone data. The following records constitute two errors: bigcitybaby.com. NS dns.bigcitybaby.com. dns.bigcitybaby.com. CNAME yosemite.bigcitybaby.com. bigcitybaby.com. CNAME yosemite.bigcitybaby.com. The first two records create an error, for the reason stated above. The last of these records is an error all by itself. It is agasint the rules to have a CNAME record for any name that also has either other records of the same name (such as the first of these three records) or has subdomains (such as the second of these three records). Similarly, this record from your propressinc.com file also creates an error: propressinc.com. CNAME yosemite.bigcitybaby.com. It's complications like this that lead me to almost never use CNAME records. The solution is to use multiple A records for the same address. If you then analyze your domain with DNS Expert, you'll see PTR record "errors"; ignore them. I hope this helps. ____________________________________________________________________ Chris Buxton Men & Mice cbuxton@menandmice.com http://www.menandmice.com

Messages In This Thread: Multiple CNAMES... who cares? by Jimi Sweet on Jul 29, 1999 at 10:32:00 am Re: Multiple CNAMES... who cares? by Men & Mice Support on Jul 29, 1999 at 11:09:00 am Re: Multiple CNAMES... who cares? by Steve Linford on Jul 29, 1999 at 11:27:00 am Re: Multiple CNAMES... who cares? by andrew kagan on Jul 29, 1999 at 12:57:00 pm Re: Multiple CNAMES... who cares? by Men & Mice Support on Jul 30, 1999 at 8:21:00 am Re: Multiple CNAMES... who cares? by andrew kagan on Jul 30, 1999 at 12:23:00 pm Re: Multiple CNAMES... who cares? by Men & Mice Support on Jul 30, 1999 at 12:34:00 pm Re: Multiple CNAMES... who cares? by andrew kagan on Jul 30, 1999 at 1:14:00 pm Re: Multiple CNAMES... who cares? by Men & Mice Support on Jul 30, 1999 at 1:38:00 pm Re: Multiple CNAMES... who cares? by andrew kagan on Jul 30, 1999 at 2:14:00 pm Re: Multiple CNAMES... who cares? by Mia''s Virtual Post Office on Jul 30, 1999 at 5:59:00 pm Re: Multiple CNAMES... who cares? by Mia''s Virtual Post Office on Jul 30, 1999 at 6:02:00 pm Re: Multiple CNAMES... who cares? by Men & Mice Support on Jul 30, 1999 at 10:56:00 pm Re: Multiple CNAMES... who cares? by Men & Mice Support on Jul 30, 1999 at 11:10:00 pm