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
Solved

How should I Go About Troubleshooting a 4.4.7 Email Delivery Error?

Posted on 2014-07-23
5
314 Views
Last Modified: 2014-08-22
We have an outside client that is having trouble getting emails through to our company's domain. According to him, when he sends a message he get's the following NDR:

"Could not deliver the message in the time limit specified.  Please retry or contact your administrator.
            <DM2PR02MB365.namprd02.prod.outlook.com #4.4.7 smtp;550 4.4.7 QUEUE.Expired; message expired>"


I'm stumped as to where to even begin? Any direction would be greatly appreciated!
0
Comment
Question by:Scott Fowler
  • 2
  • 2
5 Comments
 
LVL 13

Expert Comment

by:imkottees
ID: 40215604
Hi,

How are they delivering email to you? through smarthost or MX record?

If it is through smarhost then they have configured something wrongly, could DNS issue. It's good to revisit those configurations.
0
 
LVL 31

Accepted Solution

by:
Gareth Gudger earned 500 total points
ID: 40215862
Expired doesn't mean much. It just means Exchange finally gave up trying to resend. We need to see the error messages before the expiration. The last retry error message should tell us what is going on before it gave up.

On your side, do you see his server making a connection? If you check Message Tracking Logs or the SMTP Receive Protocol log in Exchange?

Do you have an antispam appliance or provider in play? Any reports on that?
0
 

Author Comment

by:Scott Fowler
ID: 40216949
Thank you both for the responses!

imkottees- Unfortunately, I don't know how they're delivering emails. I've tried to get in contact with their IT department, but thus far they've been somewhat uncooperative and have been quick to assume that the issue is on our end.

Gareth- We have a Sophos antispam appliance. I checked the logs on both it and our Exchange server. As it turns out, there are some emails from the client that have gotten through in the last few weeks. Both the Sophos and Exchange box processed the emails and they did make it to the correct user's inbox. So, the problem appears to be intermittent. I see no record of any failures or rejects in our logs that are related to this clients email address.

I've done some research on my own and it does appear that the issue is likely on their end. But, as I mentioned, they won't put me in contact with their IT department, so I feel like my hands are tied. Is there anything conclusive I could look at or point to, that would tell me for certain that it is indeed on their end? Then maybe I could get a little more cooperation from them.
0
 
LVL 31

Expert Comment

by:Gareth Gudger
ID: 40217150
Yep. If you have no record of it hitting your Sophos anti-spam appliance when it fails then it is not reaching your systems. Could be a DNS lookup issue on their end. Or, a problem with a smarthost if they are using one.
0
 

Author Closing Comment

by:Scott Fowler
ID: 40279316
Thanks Gareth! Your suggestions pointed me in the right direction. Unfortunately, the issue turned out to be on our end. Our Cisco ASA had the "Mail Guard" security feature turned on, which was blocking incoming SSL connections. Turned the feature off and mail started flowing normally.
0

Featured Post

Problems using Powershell and Active Directory?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Question has a verified solution.

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

Suggested Solutions

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.
As cyber crime continues to grow in both numbers and sophistication, a troubling trend of optimization has emerged over the last year.
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…

839 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