What is the IP that is being used to
connect to other SMTP servers with? You should then check that IP on
www.dnsstuff.com for a direct report.
-----Original Message-----
From:
[EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of Kevin Rogers
Sent: Thursday, January 12, 2006
8:03 AM
To: [email protected]
Subject: [IMail Forum] Reverse DNS
vs. PTR Record
Is there a difference between reverse DNS records and
PTR records? I always thought they were the same thing. But some of
our users were having trouble sending to a specific domain and when I spoke to
the other company's techs, they said they were refusing our emails because we
have no PTR record.
But I knew we did have one. I told the tech to go to dnsreport.com and
look down in the MX area.
http://www.dnsreport.com/tools/dnsreport.ch?domain=rogersbenefit.com
Shown here:
|
PASS
|
Reverse DNS entries for MX records
|
OK. The IPs of all of your mail server(s) have
reverse DNS (PTR) entries. RFC1912
2.1 says you should have a reverse DNS for all your mail servers. It is
strongly urged that you have them, as many mailservers will not accept mail
from mailservers with no reverse DNS entry. Note that this information is cached, so if you changed it recently,
it will not be reflected here (see the www.DNSstuff.com
Reverse DNS Tool for the current data). The reverse DNS entries are:
203.205.167.68.in-addr.arpa mail.rogersbenefit.com. [TTL=1470] |
But he told me that they use SurfControl 5.0 SP3 and when he checks his log
files for these transactions where our domain was refused by theirs -
SurfControl came back and said "No PTR Record".
Does anyone know if SurfControl looks up PTR records differently than
dnsreport.com? Anyone ever seen this?
Kevin
---
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