Wrong mailing list, my apologies, I meant to send this to [EMAIL PROTECTED]
>From: "pop corn" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Reverse DNS lookups
>Date: Tue, 10 Jul 2001 06:07:59 -0000
>
>I'm dealing with a new ISP that has been pretty much ok until this problem.
>I realized that they didn't set up the reverse PTR records for my eight IP
>addresses on a dedicated server. (I will be creating 8 virtual domains -
>one
>per IP address).
>
>Their staff initially said 1) reverse PTR records were never necessary; 2)
>delegating my DNS info to my machine are out of the question (they won't
>admit they don't know how and they won't accept info). They are using BIND
>and insist that nslookup is never capable of returning the domain name for
>a
>given IP address.
>
>I've been pounding on them since last week, and just got an email saying
>that a PTR record is only necessary for the base IP address of the 8
>addresses (the hostname is set to this base IP address) and they are going
>to update their DNS server tonight and promptly closed out the trouble
>ticket.
>
>I've been setting up DNS (classic BIND) for years and simply never heard of
>setting up A records without the associated PTR record for reverse address
>mapping.
>
>1) I'm about to open up another trouble ticket to ask them to add PTR
>records for the remaining seven IP addresses. Am I not correct in telling
>the ISP that all my virtual domains require reverse DNS resolution?
>
>2) If they don't add reverse PTR records for my virtual domains, I've been
>debating telling the Internic to change my DNS servers for the virtual
>domains to the base address of my own dedicated server. It's not as if my
>virtual domains are subdomains of my ISP's domain. The problem is that I
>only have the one dedicated machine. The Internic wants two DNS servers per
>domain. If I leave the existing DNS servers from my ISP, and add my own
>dedicated server as a third DNS server, will the reverse address search go
>through all three of my DNS servers until it has success?
>
>My hostname is a subdomain of my ISP's domain, so the PTR record for my
>base
>address will have to be served by my ISP's dns server and they are in fact
>doing that for me tonight.
>
>My virtual domains are independent domains immediately under .com and
>registered to the Internic. I'll use the exact same IP addresses that my
>ISP
>was serving on their DNS servers, just add the reverse DNS info. My ISP's
>info about my virtual domains will just be ignored once the Internic makes
>the change, right? I've been resisting this route because I don't want to
>create a loop of some kind.
>
>3) If I proceed with step 2, I could use dnscache on 127.0.0.1, tinydns on
>one IP, and walldns on another IP, right? It doesn't matter which external
>IP, just so long as they are different IPs because dnscache, tinydns, and
>walldns are all looking at port 53, right?
>
>There is no firewall with this solution in 2) and 3), but these virtual
>domains don't have any national secrets anyway. However, I will be serving
>qmail to these domains, so it won't be the safest environment for the
>email.
>
>I'm sorry this post is so long, it's hard for me to verbalize these DNS
>issues succinctly.
>
>
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