Solved

Exchange 2007 Outside Email Stuck

Posted on 2011-03-14
3
545 Views
Last Modified: 2012-05-11
We have a new SBS 2008 server running Exchange 2007. I have set up Internet mail flow, and now cannot send to ANY outside addresses. From inside the domain I cannot telnet to a valid domain that I know is good. From outside the domain, I can telnet to this mail server perfectly. The problem I believe is with the send connector. I am receiving email fine, just can not send to outside recipients. All mail sent outside gets stuck in the Queue with the error: 451 4.4.0 primary target IP address responded with: "421 4.2.1 Unable to connect....l

Any ideas would be appreciated.
ABSAdmin
0
Comment
Question by:absadmin
  • 2
3 Comments
 
LVL 74

Accepted Solution

by:
Glen Knight earned 500 total points
ID: 35134106
OK, first thing have you run through all the wizards in the SBS console?

Secondly, have you configured forwarders on your DNS Server? In the DNS Console, right click the server and select properties under the forwarders tab, enter your ISP's DNS servers here.

Make sure the SBS server uses only it's own IP or 127.0.0.1 for DNS, there should be no other entries in the network card configuraion.

Have you disabled IPv6? If so, re-enable it.

Then finally, in the Exchange Management Console under Server Configuration right click the Server and select properties, under the External DNS Lookups select Use these DNS Servers, enter your ISP DNS servers here too.

Then ni Organisation Configuration > Hub Transport > Send Connectors, right click  Windows SBS Internet Send and select properties, under Network tab put a check the box that says "Use the External DNS Lookup settings on the Transport Server"
0
 
LVL 74

Expert Comment

by:Glen Knight
ID: 35134110
Oh, and then restart the Microsoft Exchange Transport service.
0
 

Author Comment

by:absadmin
ID: 35134185
demazter, I have done all of those things. Email was working fine earlier today, then was working on my remote settings, and all this happened. I am receiving mail with mx records, A record, and PTR records to mail.mydomain.com. However, the DNS host, is routing my incoming mail through a secrurance spam filter server, then forwarding it to me.

I have been attempting to set up an outbound mail. I want all outbound mail to use smtp.mydomian.com. The DNS host has added an A record and PTR to my external IP address, and my ISP has added an RDNS to smtp.mydomian.com to point to my external IP Address.

Regardless of the Exchange settings, should I still not be able to telnet to another exchange server outside of my domain? I have another domain that I manage, with Exchange 2003. From any connection outside of my small business server, I can telnet to that domain and get a connection. From inside my SBS domian, I cannot telnet to the same mail server or any other.

Any ideas?

Thx: absadmin
0

Featured Post

Are your AD admin tools letting you down?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.

Question has a verified solution.

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

Follow this checklist to learn more about the 15 things you should never include in an email signature from personal quotes, animated gifs and out-of-date marketing content.
Following basic email etiquette rules will help you write a professional email and achieve a good, lasting impression with your contacts.
This video discusses moving either the default database or any database to a new volume.
This video demonstrates how to sync Microsoft Exchange Public Folders with smartphones using CodeTwo Exchange Sync and Exchange ActiveSync. To learn more about CodeTwo Exchange Sync and download the free trial, go to: http://www.codetwo.com/excha…

809 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