Solved

Bouncing message

Posted on 2003-12-05
2
309 Views
Last Modified: 2010-04-20
I get the following error when trying to send an email to some people that i've sent plenty of email to in the past... (reason: 550 5.7.1 This system is configured to reject mail from 216.219.239.109 (DNS reverse lookup failed))... Any suggestions?

I'm using sendmail btw.
0
Comment
Question by:rsumilang
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 40

Accepted Solution

by:
jlevie earned 50 total points
ID: 9883905
It looks like the server you are trying to send the mail to has been configured to reject mail from any source that doesn't satisfy a reverse DNS check. Usually that means that the forward & reverse DNS lookups must return identical data and in some cases the professed hostname offered by your server must match what is returned by DNS. This is commonly done as a part of anti-spam protection.

There are two possible solutions. One is to properly set up the DNS for your domain to have the correct forward and reverse zone data. For  standard commercial network accounts that might mean getting your provider to create the reverse zone data if in-addr.arp authority for your netblock hasn't been delegated to you. The other solution, which is applicable to ordinary "dial up" type accounts, is to use your ISP's mail server as a smart host. That makes all of the mail appear to come from a server that has valid DNS data.
0
 

Author Comment

by:rsumilang
ID: 9884652
I got the issue resolved with my hosting provider because the IP did not contain an PTR record. Thanks
0

Featured Post

Secure Your WordPress Site: 5 Essential Approaches

WordPress is the web's most popular CMS, but its dominance also makes it a target for attackers. Our eBook will show you how to:

Prevent costly exploits of core and plugin vulnerabilities
Repel automated attacks
Lock down your dashboard, secure your code, and protect your users

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Using 'screen' for session sharing, The Simple Edition Step 1: user starts session with command: screen Step 2: other user (logged in with same user account) connects with command: screen -x Done. Both users are connected to the same CLI sessio…
The purpose of this article is to demonstrate how we can use conditional statements using Python.
Learn how to navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question