Solved

Exchange 2010, Messages not going out... or are severly delayed.

Posted on 2012-04-04
9
1,110 Views
Last Modified: 2012-04-15
OVERVIEW
Have Domain Controller providing DNS
Have 1 Exchange 2010 Server on network
Authoritative DNS is Godaddy, MX records point to our Exchange server
Can receive mail from anyone, no problem.
We can send to each other inside the office from Outlook
It appears we cannot send to an external recipient or it is very delayed.

QUESTION
Where/How do start troubleshooting this?
Is it DNS or a SEND CONNECTOR config issue?
0
Comment
Question by:tech911
  • 6
  • 3
9 Comments
 
LVL 9

Expert Comment

by:Geodash
ID: 37807843
Have you looked at the event log? Also, in EMC - what do the delayed messages say, there should be a code?
0
 
LVL 3

Author Comment

by:tech911
ID: 37807885
I can see the messages in the Queue with the Queue viewer, the status is ready, there are two addresses both going to the same domain.  

I have an account on that external domain, when I login via webmail (its a godaddy POP/IMAP Account) I am receiving email from other senders.

These messages are just hanging.

What else can I tell you that will help with the diagnosis? (DNS? Send connector?)
0
 
LVL 3

Author Comment

by:tech911
ID: 37807918
Just found this in the Queue Viewer

451-4.4.0 Primary target IP address responded with a 554-p3pismtp01-024.prod.phx3.secureserver.net 554 Your access to this mail system has been rejected due to the sending MTA's poor reputation.

Our ISP is WOW Internet and we do have a business account, do you think we are on a blacklist somewhere (I will check MXToolbox now).  How can we improve our reputation, we don't send out spam, there are only 4 of us in this office.
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 9

Expert Comment

by:Geodash
ID: 37807997
Yes, I think you are being blacklisted. You have to make sure that your systems are clean. If your systems send SPAM without your knowledge, it can hurt your rep. I suggest an outbound host to monitor, but they are not free
0
 
LVL 3

Author Comment

by:tech911
ID: 37808133
Good news - we are not on any blacklists.

Bad news - when we go to senderbase.org and put in our IP we get a rating of POOR

Working from the server out, what settings should I be checking for; both in DNS and in Exchange.
0
 
LVL 3

Author Comment

by:tech911
ID: 37810771
Anybody...

Alan Hardisty where are you?

I need to confirm what DNS entries I should have on my local DNS server (The one that resides behind my firewall on my Domain Controller).
0
 
LVL 3

Accepted Solution

by:
tech911 earned 0 total points
ID: 37814070
So I tracked down the error.

My ISP had the wrong reverse DNS entry entered for our mail server, thus "INSERT EXPLODING NOISE HERE" everything was wacky and having issues.  Now that this egregious error has been corrected I expect everything to work correctly.

Not sure how to close this post correctly - Moderator please review info provided by geodash and advise as to correct course of action.  Should I award points or not?
0
 
LVL 9

Expert Comment

by:Geodash
ID: 37814079
I am glad you found the error. You can close the question and award no points if you found the answer yourself.
0
 
LVL 3

Author Closing Comment

by:tech911
ID: 37847957
I found the solution by digging into the config/operation of the phone itself.  See the post for the details.
0

Featured Post

The Eight Noble Truths of Backup and Recovery

How can IT departments tackle the challenges of a Big Data world? This white paper provides a roadmap to success and helps companies ensure that all their data is safe and secure, no matter if it resides on-premise with physical or virtual machines or in the cloud.

Question has a verified solution.

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

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.
A procedure for exporting installed hotfix details of remote computers using powershell
This tutorial will show how to configure a new Backup Exec 2012 server and move an existing database to that server with the use of the BEUtility. Install Backup Exec 2012 on the new server and apply all of the latest hotfixes and service packs. Theā€¦
how to add IIS SMTP to handle application/Scanner relays into office 365.

786 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