Why this mail is bounced?

Posted on 2011-02-21
Last Modified: 2012-05-11
This is using MS Exchange 2010. A user comes to me and told me that an external user tried to send her email but always got rejected, with the error message as follows:

One of our clients sent this delivery failure notice to us.

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 5.7.1 Recipient not authorized, your IP has been found on a block list (state 17).

Does this sender or recipient problem? How can I get rid of it?
Question by:Balack

Expert Comment

ID: 34948979
The sender has an ip that has been blacklisted it seems. Is the sender a gmail address or another domain using gmail services?
LVL 10

Accepted Solution

ujitnos earned 500 total points
ID: 34949107
Hi, found this via google, hope it throws some light
LVL 31

Expert Comment

ID: 34949262
Put your clients domain in and see if it comes up as blacklisted, then click on the blacklist and follow the instructions to get removed (or forward them the instructions as they are the ones that are blacklisted)
Don't lose your head updating email signatures!

Do your end users still have the wrong email signature? Do email signature updates bore you or fill you with a sense of dread? You can make this a whole lot easier on yourself by trusting an Exclaimer email signature management solution. Over 50 million users should you!


Author Comment

ID: 34952439
The client's mailserver ip is not blacklisted...
LVL 31

Expert Comment

ID: 34953396
Hmmm, check your Receive Connectors and ensure their server Ip is not blocked on the receive connectors

Author Closing Comment

ID: 34961492

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

Local Continuous Replication is a cost effective and quick way of backing up Exchange server data. The following article describes the steps required to configure Local Continuous Replication. Also, the article tells you how to restore from a backup…
Following basic email etiquette rules will help you write a professional email and achieve a good, lasting impression with your contacts.
In this video we show how to create a Contact in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Recipients >> Contact ta…
The video tutorial explains the basics of the Exchange server Database Availability groups. The components of this video include: 1. Automatic Failover 2. Failover Clustering 3. Active Manager

895 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

15 Experts available now in Live!

Get 1:1 Help Now