Solved

Your message did not reach some or all of the intended recipients

Posted on 2008-10-30
2
333 Views
Last Modified: 2008-11-06
When users send messages to some addresses the following error is returned

Your message did not reach some or all of the intended recipients.

The following recipient(s) could not be reached:

      "destination e-maill"' on 10/30/2008 10:17 AM
            You do not have permission to send to this recipient.  For assistance, contact your system administrator.
            <KTPO04.ktpo.ops #5.7.1 smtp;550 5.7.1 Client host rejected: cannot find your hostname, [our e-mail server address]>

We use Exchange 2003 on a MS Windows 2003 SP2 server
0
Comment
Question by:ktpoitm
[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 2

Expert Comment

by:EfrenM
ID: 22841459
0
 
LVL 2

Accepted Solution

by:
MobiNet-ca earned 250 total points
ID: 22841469

This might be a reverse DNS issue. The receiving server looks up the IP address of the sending SMTP server to check if it has an associated hostname value. If a DNS record comes back for that IP address the receiving server  then tries to lookup the IP information of that DNS record to confirm that it has a valid IP record.

nslookup - 123.123.123.123
returns - someserver.yourdomain.com
nslookup - someserver.yourdomain.com
returns - no valid address

Try that lookup sequence with your IPs and hostnames to see if the IP <-> HOSTNAME <-> IP records all exist.
0

Featured Post

NEW Veeam Agent for Microsoft Windows

Backup and recover physical and cloud-based servers and workstations, as well as endpoint devices that belong to remote users. Avoid downtime and data loss quickly and easily for Windows-based physical or public cloud-based workloads!

Question has a verified solution.

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

In-place Upgrading Dirsync to Azure AD Connect
This article describes how to import an Outlook PST file to Office 365 using a third party product to avoid Microsoft's Azure command line tool, saving you time.
This video discusses moving either the default database or any database to a new volume.
CodeTwo Sync for iCloud (http://www.codetwo.com/sync-for-icloud?sts=6554) automatically synchronizes your Outlook 2016, 2013, 2010 or 2007 folders with iCloud folders available via iCloud Control Panel. This lets you automatically sync them with…

738 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