Solved

Exchange Queue Backing Up

Posted on 2013-11-06
4
272 Views
Last Modified: 2013-11-08
I am running exchange server 2010 and I am noticing quite a few emails that will not leave the queue because of this error: 451 4.4.0 Primary target IP address with: "421 4.4.2 Connection dropped due to SocketError"

I have tried creating a new send connector to force helo but that didn't work.
I am able to telent from the exchange server to a problematic domain. I can also do a nslookup without issue from the exchange server to a problematic domain.

Everything I am reading says this a DNS issue but I can't find where or what needs to be added\changed.
We have not made any changes to exchange and it's not all domains but it does seem to be getting more and more.

Thank you!
0
Comment
Question by:Winsoup
[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
4 Comments
 
LVL 43

Expert Comment

by:Amit
ID: 39628292
Who manages that problematic domain. 99.999% it is remote server issue or network or firewall issue.
0
 
LVL 3

Author Comment

by:Winsoup
ID: 39628321
I thought that too but the more I researched I saw people were able to solve issues by trying some of the things I mentioned.
Do you know what kind of problems they can look for? I can see if I can get ahold of their tech.
I know they are going to say that they are receiving emails from other domains so they probably won't do too much with it but I can try.
0
 
LVL 43

Accepted Solution

by:
Amit earned 500 total points
ID: 39628342
From your side you can restart transport service and check again. If still, it shows same error, then you need to focus on network/firewall or remote domain server.
0
 
LVL 76

Expert Comment

by:Alan Hardisty
ID: 39628638
Check your Public IP Address on www.blacklistalert.org and see if you are blacklisted anywhere.

Also check on www.senderbase.org to see your IP Reputation to check that it is good,

Alan
0

Featured Post

Visualize your virtual and backup environments

Create well-organized and polished visualizations of your virtual and backup environments when planning VMware vSphere, Microsoft Hyper-V or Veeam deployments. It helps you to gain better visibility and valuable business insights.

Question has a verified solution.

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

A list of top three free exchange EDB viewers that helps the user to extract a mailbox from an unmounted .edb file and get a clear preview of all emails & other items with just a single click on mailboxes.
After hours on line I found a solution which pointed to the inherited Active Directory permissions . You have to give/allow permissions to the "Exchange trusted subsystem" for the user in the Active Directory...
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…
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…

705 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