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
Solved

51. 4.4.0 Primary target IP address responded with: "451 5.7.3 Cannot achieve Exchange Server Authentication". Attemped failover host, but not succeed.

Posted on 2011-03-05
3
3,708 Views
Last Modified: 2012-05-11
Hi,
could someone help me please?
I Have Exchange 2003 in organization at Active Directory site A. Later we installed Exchange 2010 (HUB+CAS+Mailbox) in Active Directory Site B. They were communicated via Routing Group Connector.
Now we have new Exchange 2010 with CAS, HUB and mailbox roles installed in site A. I created also RG connector between 2003 and 2010 in this site A.
All e-mails from internet goes to Exchange 2003 and then to 2010 at the same site= site A.

I am not able send e-mail (from internal or external) to Exchnage 2010 in site B. Server in AD site B is able to SEND e-mail. The e-mails stucks in the mail queue on the Ex.2010 server at site A and I got error below:

4.4.0 Primary target IP address responded with: "451 5.7.3 Cannot achieve Exchange Server Authentication". Attemped failover host, but not succeed.

I have checked connector (receive), reboot transport service after configuration, but no success. I also checked if I have checke Windows Auth. Mechanism at Ex.2003... Telnet to port 25 from all exchange servers o each other works.

Could some on give me and advice?

Thanks Peter
0
Comment
Question by:Kolouschek
  • 2
3 Comments
 
LVL 3

Accepted Solution

by:
IamTheMorsa earned 125 total points
ID: 35043306
0
 

Author Comment

by:Kolouschek
ID: 35043417
Hi,
thanks for info, but before you wrote me I did check of my Receive connectors-I disable all the rest and configure only defaut connectores. After that seems that mail flow works, but I will do few test later and we will see if it is really alright... Anyway thank you for advice.
PW
0
 

Author Closing Comment

by:Kolouschek
ID: 35045955
If you have this kind of problem you have to ALWAYS check your receive connectors if they are configured well.
0

Featured Post

Networking for the Cloud Era

Join Microsoft and Riverbed for a discussion and demonstration of enhancements to SteelConnect:
-One-click orchestration and cloud connectivity in Azure environments
-Tight integration of SD-WAN and WAN optimization capabilities
-Scalability and resiliency equal to a data center

Question has a verified solution.

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

We are happy to announce a brand new addition to our line of acclaimed email signature management products – CodeTwo Email Signatures for Office 365.
MS Outlook is a world-class email client application that is mainly used for e-communication globally.  In this article, we will discuss the basic idea about MS Outlook, its advanced features, and types of MS Outlook File formats.
In this Micro Video tutorial you will learn the basics about Database Availability Groups and How to configure one using a live Exchange Server Environment. The video tutorial explains the basics of the Exchange server Database Availability grou…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…

861 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