Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

451 5.7.3 Cannot achieve Exchange Server authentication - Exchange 2010 to Exchange 2007

Posted on 2010-09-03
2
Medium Priority
?
1,619 Views
Last Modified: 2012-06-27
I have 2 Exchange client access/hub transport/mailbox servers. One is 2007 and one is 2010 (new setup). Both are operating fine. I have only one send connector. The Exchange 2007 sends all outbound mail and receives all inbound mail (for the exchange 2007) mailboxes but fails to deliver (and collects in queue) all mail going to Exchange 2010 server.
The Exchange 2010 cannot send or receive any mail and on the queue I saw the error "451 5.7.3 Cannot achieve Exchange Server authentication"

Thanks.
0
Comment
Question by:paralves
[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 16

Accepted Solution

by:
uescomp earned 2000 total points
ID: 33598474
Check your send and receive connectors on both servers and make sure that Exchange server authentication is selected.  I ran into the same problem with a new Exchange 2010 deployment.
0
 

Author Comment

by:paralves
ID: 33610424
Thanks uescomp. I check the Exchange server authentication on the receive connectors of both servers and now all are operanting fine.

Thanksss.
0

Featured Post

Office 365 Training for IT Pros

Learn how to provision tenants, synchronize on-premise Active Directory, implement Single Sign-On, customize Office deployment, and protect your organization with eDiscovery and DLP policies.  Only from Platform Scholar.

Question has a verified solution.

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

How to deal with a specific error when using the Enable-RemoteMailbox cmdlet to create a mailbox in the cloud-based service, for an existing user in an on-premises Active Directory.
I don't pretend to be an expert at this, but I have found a few things that are useful. I hope that sharing them here will help others, so they will not have to face some rather hard choices. Since I felt this to be a topic of enough importance and…
In this video we show how to create a Resource Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: Navigate to the Recipients >> Resources tab.: "Recipients" is our default selection …
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…

670 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