[Last Call] Learn how to a build a cloud-first strategyRegister Now

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 219
  • Last Modified:

Receiving email with attachment error coming from a specific domain

We have a customer that can send mail to our internal exchange server just fine but when they send us an email with any attachment (small in size), they get the following NDR...
The server has tried to deliver this message, without success, and has stopped trying. Please try sending this message again. If the problem continues, contact your helpdesk....

#550 4.4.7 QUEUE.Expired; message expired ##

Any ideas why this particular sender would be getting this reply?
0
GMSMRM
Asked:
GMSMRM
  • 5
  • 3
  • 2
1 Solution
 
Deepu ChowdaryCommented:
Which version of exchange are you using..?
Are you able to do a telnet..?
0
 
Deepu ChowdaryCommented:
Check this discussion once..
0
 
GMSMRMAuthor Commented:
I am running Exchange 2007 and I can telnet with no problem.
The discussion you posted does not help me.

I am listed on one blacklist TIOPAN and have been trying to get them to remove me for a while now without success. Some of these blacklist groups are terrible. It's a good service but only if it is maitained properly.
However I don;t think that this has any effect on this email domain issue. There is no materail in this NDR that states about blacklisting.
0
Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

 
Deepu ChowdaryCommented:
If you are in blacklst automatically your mailflow will be effected.
First make sure that you are out of it and then try once.
0
 
GMSMRMAuthor Commented:
I have been requesting TIOPAN to remove me from their list. It's been over a month and I've have not ever gotten a response.
0
 
Sirreal45Commented:
Have you checked your message size limitations? is the attachment putting it over?
0
 
GMSMRMAuthor Commented:
I have set the attachment size up to 30 MB. It is not the issue in this instance.
0
 
Sirreal45Commented:
What type of virus scanners are you using? If the user can send w/o an attachment, I don't think it's a blacklist issue.

can the sender send different types of attachments? .zip .doc etc, do they all get rejected?
0
 
GMSMRMAuthor Commented:
I am running a sonicwall firewall, mcafee client, and forefront security on the edge server. Usually I would get a message on my end stating if anything was filtered. I don't even see a record of the email with attachment even hitting our server.
0
 
GMSMRMAuthor Commented:
After the last blacklisting finally went away, I have not heard any further complaints about this issue.
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

  • 5
  • 3
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now