Solved

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

Posted on 2003-10-29
5
3,638 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
  • 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

Complete VMware vSphere® ESX(i) & Hyper-V Backup

Capture your entire system, including the host, with patented disk imaging integrated with VMware VADP / Microsoft VSS and RCT. RTOs is as low as 15 seconds with Acronis Active Restore™. You can enjoy unlimited P2V/V2V migrations from any source (even from a different hypervisor)

Question has a verified solution.

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

Suggested Solutions

How many times have you wanted to quickly do the same thing to a list but found yourself typing it again and again? I first figured out a small time saver with the up arrow to recall the last command but that can only get you so far if you have a bi…
Setting up Secure Ubuntu server on VMware 1.      Insert the Ubuntu Server distribution CD or attach the ISO of the CD which is in the “Datastore”. Note that it is important to install the x64 edition on servers, not the X86 editions. 2.      Power on th…
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…
Connecting to an Amazon Linux EC2 Instance from Windows Using PuTTY.

867 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

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now