Solved

Installed 2010 Edge Transport and now getting 451 4.4.0 on 2007 Hub Transport

Posted on 2011-09-20
6
594 Views
Last Modified: 2012-05-12
Greetings,

I'm in the middle of an Exchange 2003 / 2007 to 2010 transition.  Mailflow was working between all 3 environments.  I installed an Exchange 2010 Edge Transport server in the DMZ, created a new subscription and applied to internal org via Hub Transport 2010 server.  Test-EdgeSynchronization and Start-Syncrhonization were successful but mail starts queuing up on the Hub transport server with error 451 4.4.0 and 451 5.7.3 Cannot achieve Exchange Server authentication.

Any ideas what may be wrong?
0
Comment
Question by:loudelat
  • 4
  • 2
6 Comments
 
LVL 28

Expert Comment

by:sunnyc7
ID: 36571531
Did you open port 50636 from DMZ to Internal network for Edge Sync ?
Check the port requirements here:
http://technet.microsoft.com/en-us/library/cc526574.aspx

I'd restart AD LDS on Edge Server and give it a shot.

There are some guides here:
http://technet.microsoft.com/en-us/library/bb124896(EXCHG.80).aspx

and this kb
http://support.microsoft.com/kb/976108


0
 

Author Comment

by:loudelat
ID: 36571669
Thanks. Required ports are open. DNS resolution is successful. Restarted services but still not working.
0
 

Accepted Solution

by:
loudelat earned 0 total points
ID: 36575780
Issue resolved. ASA firewall was performing fixup on smtp which was causing mail delivery issues. Disabled fixup and all is well again.
0
Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

 

Author Closing Comment

by:loudelat
ID: 36597790
Resolved by submitter.
0
 

Author Comment

by:loudelat
ID: 36575789
Resolved
0
 
LVL 28

Expert Comment

by:sunnyc7
ID: 36575931
Thanks for updating the ticket with the solution.
0

Featured Post

Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Exhange 2010 10 37
Exchange 2010 to Exchange 2016 - migrating [room] resources. 3 40
exchange, email gateway 2 30
MailTips Exchange 2010 5 12
Exchange server is not supported in any cloud-hosted platform (other than Azure with Azure Premium Storage).
Learn to move / copy / export exchange contacts to iPhone without using any software. Also see the issues in configuration of exchange with iPhone to migrate contacts.
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 …
The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…

773 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