Search Again: Re: DNS woes.. From: Len Conrad Date: Friday, August 2, 2002 Time: 12:52:03 am >What if I have 40 domains and each one has a mail.thisdomain.com pointing to >the same IP address. legal, and common >How would they add the reverse name PTR to that IP? one IP = one PTR hostname obviously, with one ip with many A records, you have to choose one hostname. domain.com doesn't have to have a MX hostname of mail.domain.com. In fact, You're complicating your life to do it that way. I recommend: eachandeverydomain.com MX 10 mx1.ISPdomain.com. This keeps your life simpler, and removes the PTR hostname quandry. mx1.ISPdomain.com. A ip.ad.re.ss should match: ss.re.ad.ip.in-addr.arpa PTR mx1.ISPdomain.com. btw, for each domain, create a group of mail-related hostnames, esp DON'T give your clients mail.ISPdomain.com for all mail functions. mail.domain.com has caused more problems than it's worth, so I don't even use it: smtp A ip.ad.re.ss ; authenticated outbound smtp mail pop A ip.ad.re.ss ; pop mail webmail A ip.ad.re.ss ; webmail imap A ip.ad.re.ss ; Len ___________________________________________________________________ Men & Mice: QuickDNS - DNS Expert - DNS Training & Consulting DNS Class: Atlanta 05/21-23 Chicago 06/4-5 New York 06/18-19 www.MenAndMice.com/DNS-training/

Messages In This Thread: DNS woes.. by Mark Moloughney on Aug 1, 2002 at 3:06:35 pm Re: DNS woes.. by Len Conrad on Aug 1, 2002 at 3:20:28 pm Re: DNS woes.. by Mark Moloughney on Aug 1, 2002 at 3:26:53 pm Re: DNS woes.. by Central Station Records on Aug 1, 2002 at 3:30:17 pm Re: DNS woes.. by Global Homes Webmaster on Aug 1, 2002 at 3:37:27 pm Re: DNS woes.. by Mark Moloughney on Aug 1, 2002 at 7:45:37 pm Re: DNS woes.. by Len Conrad on Aug 2, 2002 at 12:52:03 am