Reverse DNS Lookup Failed!

I started this thread weeks ago in the mail category, because it was related to sending e-mails to certain accounts. If you could please look at this thread I would greatly appreciate it so I don't have to re-explain the whole situation. I need to get this resolved as soon as possible and I don't know what else to do. I have had tons of help on the subject, yet no one can figure out why it's not working. You can do reverse resolution to my server just fine and my service provider shows it's pointing to my dns servers but somewhere in the mix it won't resolve any other way except directly to mine.
http://discussions.apple.com/thread.jspa?threadID=323884&tstart=0
I have read every article on here that has revserse DNS in it, yet still no luck. Thanks.

Zone File:
$TTL 86400
funsunstudio.com. IN SOA ns1.funsunstudio.com. marshall.funsunstudi
o.com. (
2006013000 ; serial
3h ; refresh
1h ; retry
1w ; expiry
1h ) ; minimum
funsunstudio.com. IN NS ns1.funsunstudio.com.
funsunstudio.com. IN NS ns2.funsunstudio.com.
funsunstudio.com. IN A 12.146.245.40
ns1 IN A 12.146.245.40
ns2 IN A 12.146.245.41
mail IN A 12.146.245.34
funsunstudio.com. IN MX 0 mail
www IN A 12.146.245.42
* IN A 12.146.245.42
oms IN A 12.146.245.42
named.conf
zone "funsunstudio.com." in {
file "funsunstudio.com.zone";
type master;
zone "245.146.12.in-addr.arpa" IN {
file "db.12.146.245";
type master;
db.12.146.245 file:
$TTL 86400
245.146.12.in-addr.arpa. IN SOA ns1.245.146.12.in-addr.arpa. mar$
2006013000 ; serial
3h ; refresh
1h ; retry
1w ; expiry
1h ) ; minimum
245.146.12.in-addr.arpa. IN NS ns1.funsunstudio.com.
245.146.12.in-addr.arpa. IN NS ns2.funsunstudio.com.
32/28.245.146.12.in-addr.arpa. IN PTR ns1.funsunstudio.com.
32/28.245.146.12.in-addr.arpa. IN PTR ns2.funsunstudio.com.
34.245.146.12.in-addr.arpa. IN PTR mail.funsunstudio.com.
42.245.146.12.in-addr.arpa. IN PTR www.funsunstudio.com.
Yes I know I am resolving it for the whole C-Class, but should not affect my issue. Thanks for the help Camelot. BTW I am basing this all off the e-mail AT&T sent me about the setup, so if it's totally wrong please don't yell too bad.

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Don't we all ;)
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In article <[email protected]>, [email protected]
says...
Is there a property that can be set to disable the reverse DNS
lookup for client requests? I read that if reverse lookups are
no working then client requests can take an extra 15-30 seconds.
In our environment reverse lookups are not something we can
count on so we would like to disable them completely. Please let
me know which property can be set it if any to accomplish this.
Regards,
Robert
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class Parent {
Parent(int i, String s) {
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class Child extends Parent {
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HI--
I guess it's better, but not 100% fixed.
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I didn't try the 4.xxxx DNS suggestion. No offense,
but that sounds really hokey.
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Also, you can time different servers if you want, using the dig utility in the Terminal application:
<pre class="command">dig [email protected]</pre>You should get the query time near the bottom of the output. There are lists of publicly accessible DNS servers on the internet. Run some time tests and see if you can find some faster ones. Here's what I got:
<pre class="command">; <<>> DiG 9.3.2 <<>> [email protected]
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 12531
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;www.apple.com\@4.2.2.1. IN A
;; AUTHORITY SECTION:
. 900 IN SOA A.ROOT-SERVERS.NET. NSTLD.VERISIGN-GRS.COM. 2006120100 1800 900 604800 86400
;; Query time: 37 msec
;; SERVER: 192.168.1.1#53(192.168.1.1)
;; WHEN: Fri Dec 1 17:05:21 2006
;; MSG SIZE rcvd: 114</pre>
charlie

ASA 5520 Reverse DNS lookup Issue

We are having Reverse DNS issues.
10.10.0.10 = Exchange Server
Windows 2003 = DNS server internal.
Setup: 1 to 1 NAT
10.10.0.10 smtp --> 70.89.133.218 smtp
Int gi0/2 = 70.89.133.217
Incoming Access Rule:
any --> 70.89.133.218 smtp permit
When we do a WhatismyIp on exchange server it says the IP is 70.89.133.217
It should be 70.89.133.217.
This is causing our email to be rejected from external sites due to reverse dns not returning 218. External people say are email is coming from 217. Comcast says the reverse pointer is setup correctly.
What are we doing wrong?
Thanks for any help you can offer.

Correction:
When we do a WhatismyIp on exchange server it says the IP is 70.89.133.217
It should be 70.89.133.218
217 is the interface gi0/2 on the ASA.

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