Mailing List CGatePro@mail.stalker.com Message #99022
From: Nicolas Hatier <nicolas.hatier@niversoft.com>
Subject: Re: PTR Record
Date: Wed, 23 Dec 2009 17:44:58 -0500
To: CommuniGate Pro Discussions <CGatePro@mail.stalker.com>
You will have to contact your provider about the PTR record to make it compliant.

The PTR record of 65.172.152.51 should be maxboostracing.com

NH

On 2009-12-23 17:40, bob wrote:
Interesting thank you. 65.172.152.51 is most definitely static, let me up those in the DNS server and hopefully that will fix it!


Lyle Giese wrote:
bob wrote:
  
Happy holidays everyone.
I seem to be having an issue emailing to a certain domain which is
ultra secure judging by the owner of the place who is a security freak
:) This is the bounce back I get:

Failed to deliver to 'xxx@shadowops.com'
SMTP module(domain shadowops.com) reports:
return-path address <bob@maxboostracing.com> rejected by
firewall.shadowops.com:
554 5.7.1 Looks like a dynamic address or the PTR record for your
mailserver is non-compliant

It is not a dynamic address he has, so maybe something is messed up on
my config?

Bob


    
Looks like a dynamic address to me also.

maxboostracing.com mx records point to mx1.maxboostracing.com and
mx2.maxboostracing.com.  Both of these point to the same ip address
65.172.152.51.  The TTL is only 1440 seconds on the A and MX records. 
12 hours or 43,200 seconds is considered minimum for mail servers to not
look like dynamic address.

Then the reverse lookup for 65.172.152.51 is
65.172.152.51.dsl.99main.com and has a TTL of 300 seconds.  Looks like
dynamic address to me here also.  AOL's guidelines state that if the
reverse lookup contains the ip address, it's considered dynamic in
addition to the short ttl.

Lyle Giese
LCR Computer Services, Inc.

ncc1701b:~ # dig @ns2.mydyndns.org mx1.maxboostracing.com

; <<>> DiG 9.4.2-P1 <<>> @ns2.mydyndns.org mx1.maxboostracing.com
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3614
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;mx1.maxboostracing.com.                IN      A

;; ANSWER SECTION:
mx1.maxboostracing.com. 1440    IN      A       65.172.152.51

;; AUTHORITY SECTION:
maxboostracing.com.     86400   IN      NS      ns4.mydyndns.org.
maxboostracing.com.     86400   IN      NS      ns5.mydyndns.org.
maxboostracing.com.     86400   IN      NS      ns2.mydyndns.org.
maxboostracing.com.     86400   IN      NS      ns1.mydyndns.org.
maxboostracing.com.     86400   IN      NS      ns3.mydyndns.org.

;; Query time: 60 msec
;; SERVER: 204.13.249.76#53(204.13.249.76)
;; WHEN: Wed Dec 23 16:26:07 2009
;; MSG SIZE  rcvd: 158

ncc1701b:~ #
ncc1701b:~ # dig @ns2.99main.com -x 65.172.152.51

; <<>> DiG 9.4.2-P1 <<>> @ns2.99main.com -x 65.172.152.51
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44188
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;51.152.172.65.in-addr.arpa.    IN      PTR

;; ANSWER SECTION:
51.152.172.65.in-addr.arpa. 300 IN      PTR    
65.172.152.51.dsl.99main.com.

;; AUTHORITY SECTION:
152.172.65.in-addr.arpa. 300    IN      NS      ns1.99main.com.
152.172.65.in-addr.arpa. 300    IN      NS      ns2.99main.com.

;; ADDITIONAL SECTION:
ns1.99main.com.         86400   IN      A       208.28.184.15
ns2.99main.com.         86400   IN      A       208.28.184.16

;; Query time: 90 msec
;; SERVER: 208.28.184.16#53(208.28.184.16)
;; WHEN: Wed Dec 23 16:26:59 2009
;; MSG SIZE  rcvd: 154

ncc1701b:~ #

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--

Nicolas Hatier, ing. <nicolas.hatier@niversoft.com>
Niversoft idées logicielles - http://www.niversoft.com

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