?
Solved

invalid/host-not-in-DNS return address not allowed

Posted on 2003-10-29
5
Medium Priority
?
3,656 Views
Last Modified: 2007-12-19
I was able to send mails using the unix systems those have internal ip 10.10.10.x to one of our public mail servers. Suddenly the messages started bouncing back since 10 days and showing up the error message as:

Diagnostic-Code: SMTP; 550 5.1.8 invalid/host-not-in-DNS return address not allo
wed

I am just using simple sendmail client and the sendmail daemon is not running on them.
I am able to send mails from the same systems to yahoo mail and hotmail without any problem.

Thanks in advance.

Prasad

0
Comment
Question by:prasadklk
[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
5 Comments
 
LVL 20

Expert Comment

by:Gns
ID: 9644664
Well, is the "troublesome" MTA able to resolve the return address name then? Seems likely that something changed there, souldn't you say.

-- Glenn
0
 
LVL 3

Accepted Solution

by:
prasadklk earned 0 total points
ID: 9645308
I have resolved the problem myself.
by adding an entry to sendmail.cf as Dj<smtpmailserver.domain.com>.
Thanks,
Prasad
0
 
LVL 20

Expert Comment

by:Gns
ID: 9649362
Fine by me.

-- Glenn
0

Featured Post

Setting up LaraDock for Laravel

Learn how to set up LaraDock in a Laravel project - LaraDock gives us an easy way to run a Laravel application using Docker in a single command.

Question has a verified solution.

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

Network Interface Card (NIC) bonding, also known as link aggregation, NIC teaming and trunking, is an important concept to understand and implement in any environment where high availability is of concern. Using this feature, a server administrator …
I am a long time windows user and for me it is normal to have spaces in directory and file names. Changing to Linux I found myself frustrated when I moved my windows data over to my new Linux computer. The problem occurs when at the command line.…
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…
How to Install VMware Tools in Red Hat Enterprise Linux 6.4 (RHEL 6.4) Step-by-Step Tutorial
Suggested Courses
Course of the Month9 days, 1 hour left to enroll

764 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