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

x
?
Solved

Delivery status : Failed. Message could not be delivered to domain .521

Posted on 2013-05-28
8
Medium Priority
?
1,495 Views
Last Modified: 2013-06-14
Hello, I was wondering if an expert could help me out?
One of my clients at example.com which i am hosting her exchange email.
janedoe@example.com
Is experiencing bounce backs from certain clients of HERS.
When they email her they get a bounce back error of

"This is a delivery status notification, automatically generated by MTA mx02.testmail.ca on Regarding recipient(s) : janedoe@example.com Delivery status : Failed. Message could not be delivered to domain .521; ***.***.***.*** does not accept mail MTA Response :521 The original message headers are included as attachment."


Any information would be greatly appreciated.
Thanks!

Nate
0
Comment
Question by:ottcomputing
[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
8 Comments
 
LVL 4

Expert Comment

by:Rsilva98
ID: 39202890
can you give more detailed error?
0
 
LVL 52

Expert Comment

by:Manpreet SIngh Khatra
ID: 39203425
What is the Exchange server your hosting on ? Exchange Version ?
What is the client version ?
Can any other user or test account on the Hosted server email her ?
Is she the only user on that domain ? if not can you check her setting with other user and ensure that its good
Is her Domain as Accepted Domain and is that a part of email address as well

- Rancy
0
 
LVL 1

Expert Comment

by:ssk_2k3
ID: 39204665
sounds like external domain server will not accept email from a domain without an
SPF record. So please convey the respective domain admin to make SPF record.

Also try to do MXlookup to remote domain to verify that you are pointing to correct DNS server. At some cases the remote domain might made some changes and your relay server may not aware due to DNS cache . So need to cleanup DNS cache from your side to correct this issue.

-Suresh
0
Looking for the Wi-Fi vendor that's right for you?

We know how difficult it can be to evaluate Wi-Fi vendors, so we created this helpful Wi-Fi Buyer's Guide to help you find the Wi-Fi vendor that's right for your business! Download the guide and get started on our checklist today!

 
LVL 1

Author Comment

by:ottcomputing
ID: 39204786
Hi there,  I'll answer a few questions:

Our Exchange Server version: 2010 SP3

Nobody else is reporting issues of missing mail yet.

There are 50 users on the domain.

If our EHLO or HELO response is our internal domain, could some domains refuse to send mail to it?
0
 
LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 39206429
The EHLO response has nothing to do with the sending of the email.
You have hashed out the IP address - what address is it? Is it the correct address of your server?

The error you have posted isn't an Exchange error, I usually see this when DNS records aren't setup correctly and there is an MX record going somewhere else, or the MX record has a problem and the remote servers try to send to the root of the domain, which is hosted elsewhere.

Simon.
0
 
LVL 1

Accepted Solution

by:
ottcomputing earned 0 total points
ID: 39215271
Well.. I decided that I would install DYN's Mail Relay service so that MX is taken care of offsite.  I think maybe using a CNAME as the MX may have been the issue.
0
 
LVL 1

Author Comment

by:ottcomputing
ID: 39233693
The problem ended up being CNAME as MX.  Some mailservers don't like this so I took my above solution and used it.
0
 
LVL 1

Author Closing Comment

by:ottcomputing
ID: 39247013
The problem ended up being CNAME as MX.  Some mailservers don't like this so I took my above solution and used it.
0

Featured Post

Are your AD admin tools letting you down?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.

Question has a verified solution.

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

Are you an Exchange administrator employed with an organization? And, have you encountered a corrupt Exchange database due to which you are not able to open its EDB file. This article will explain all the steps to repair corrupt Exchange database.
Here in this article, you will get a step by step guidance on how to restore an Exchange database to a recovery database. Get a brief on Recovery Database and how it can be used to restore Exchange database in this section!
The video tutorial explains the basics of the Exchange server Database Availability groups. The components of this video include: 1. Automatic Failover 2. Failover Clustering 3. Active Manager
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…
Suggested Courses

609 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