Solved

Exchange 2013/2010 Coexistence Mail Flow Issue

Posted on 2014-07-23
4
2,126 Views
Last Modified: 2014-07-28
I have two Exchange servers - a 2010 server and a 2013 server.  Both use my internal DNS for all name resolution.  I can successfully send mail from 2013 to 2010, but not from 2010 to 2013.  The error I am seeing in my queue for the version 15 hub transport is "451 4.7.0 Temporary server error. Please try again later. PRX2".  In my experience, this points to a DNS issue of some sort.  Both servers can ping each other.  Port 25 is open between the servers.  In my internal DNS, I have one MX record that points to my old 2010 server.  Does communication between the servers depend on MX records?  I've also made sure that the custom receive connectors on my 2013 box do not include the 2010 server's IP.
0
Comment
Question by:marrj
[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
  • 2
4 Comments
 
LVL 43

Expert Comment

by:Amit
ID: 40214980
Can you to connect via telnet and check if you are able to submit email. Also check this article:
http://www.techieshelp.com/exchange-2013-451-4-7-0-temporary-server-error-please-try-again-later-prx5/
0
 
LVL 1

Accepted Solution

by:
marrj earned 0 total points
ID: 40215023
http://blog.kloud.com.au/2013/11/22/exchange-2013-dns-settings-cause-transport-services-to-crash/

This article seems to have done the trick.  Never knew that Exchange cared about an automatically registered hostname.  Exchange 2013 is proving to be quite the learning experience for me.
0
 
LVL 43

Expert Comment

by:Amit
ID: 40215032
Thanks for sharing the solution.
0
 
LVL 1

Author Closing Comment

by:marrj
ID: 40223703
I ended up fixing the problem with my own research.
0

Featured Post

Office 365 Training for Admins - 7 Day Trial

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

This article will help to fix the below errors for MS Exchange Server 2013 I. Certificate error "name on the security certificate is invalid or does not match the name of the site" II. Out of Office not working III. Make Internal URLs and Externa…
Check out this step-by-step guide for using the newly updated Experts Exchange mobile app—released on May 30.
To show how to create a transport rule 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 Mail Flow >> Rules tab.:  To cr…
how to add IIS SMTP to handle application/Scanner relays into office 365.
Suggested Courses

623 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