Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

Exchange 2007 Outside Email Stuck

Posted on 2011-03-14
3
Medium Priority
?
572 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
[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
3 Comments
 
LVL 74

Accepted Solution

by:
Glen Knight earned 2000 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

Prepare for your VMware VCP6-DCV exam.

Josh Coen and Jason Langer have prepared the latest edition of VCP study guide. Both authors have been working in the IT field for more than a decade, and both hold VMware certifications. This 163-page guide covers all 10 of the exam blueprint sections.

Question has a verified solution.

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

A couple of months ago we ran into an issue that necessitated re-creating our Edge Subscriptions. However, when we attempted to execute the command: New-EdgeSubscription -filename C:\NewEdgeSub_01.xml we received an error indicating that the LDAP se…
Know the reasons and solutions to move/import EDB to New Exchange Server. Also, find out how to recover an Exchange .edb file and to restore the file back.
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 …
In this video we show how to create an Address List 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 Organization >> Ad…
Suggested Courses

636 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