1 <!DOCTYPE html
PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
2 "http://www.w3.org/TR/html4/loose.dtd">
6 <meta name
="generator" content
=
7 "HTML Tidy for Linux (vers 25 March 2009), see www.w3.org">
8 <meta http
-equiv
="Content-type" content
="text/html;charset=UTF-8">
10 <title
>dylanstestserver
</title
>
11 <link href
="../includes/style.css" rel
="stylesheet" type
="text/css">
12 <link rel
="icon" href
="../favicon.ico" type
="image/png">
19 "http://dylanstestserver.com/">
20 <img src
="../images/dylanstestserver.png" alt
="dylanstestserver"
27 <h2
>Amazon EC2 PTR
/reverse DNS record
/2/15/10</h2
>
28 <p
><a href
="https://aws-portal.amazon.com/gp/aws/html-forms-controller/contactus/ec2-email-limit-rdns-request">Here
</a
> is the form to request a custom PTR record
for an Amazon EC2 Elastic IP
. It
's listed, of course, under <u>Request to Remove Email Sending Limitations</u>, and took me an unfortunate amount of time to locate.</p>
29 <p>This is good when setting up a mail server in Amazon's cloud
, since email
providers (like gmail
) flag mail whose reverse DNS does not match the MX record
. Without this request
, the reverse DNS lookup will
return the
default PTR record that will look something like
<a href
="ec2-50-16-219-8.compute-1.amazonaws.com">ec2
-50-16-219-8.compute
-1.amazonaws
.com
</a
></p
>
33 <p
>Every other day I manage to get something working with help from a blog I find with google that just
-so
-happens to
include a detail the manual spares
. These notes are in the hope of helping in the same way
. I don
't plan on writing often, and there will be no order to the notes; in this way these notes are meant more for spiders than humans.</p>
35 <h1 id="contact_me" style="margin-top:60px;"><a href=
36 "mailto:dylan@psu.edu">dylan</a></h1><a href=
37 "mailto:dylan@psu.edu">@psu.edu</a>