Solved

501 Domain must resolve

Posted on 2013-11-19
6
1,191 Views
Last Modified: 2013-12-03
Hi,

Have a problem with email, where if I do not route our exchange mail through our ISP's smart host then a certain domain wont allow our email (genzone.net).

I simply cannot route the mail through the smart host though, because we get loads of bouce backs again because its sees to much of our mail as spam due a CMAE Filter, BTW my ISP is DEMON, and this isn't happening to just me.

I cannot see my current mx record though.

Is the reason why my messages are being blocked by genzone.net because I haven't got an MX Record?

Thanks
Luke
0
Comment
Question by:xObIA
[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
6 Comments
 
LVL 12

Expert Comment

by:florin_s
ID: 39659088
Hi,

Please see below link for detailed description: "Syntax error in parameters or arguments (e.g. invalid email address)"
http://www.answersthatwork.com/Download_Area/ATW_Library/Networking/Network__3-SMTP_Server_Status_Codes_and_SMTP_Error_Codes.pdf
0
 
LVL 1

Author Comment

by:xObIA
ID: 39659106
Thanks, although surely if this was an incorrect address or "Syntax error in parameters or arguments (e.g. invalid email address)" then the mail wouldn't route in any situation?
0
 
LVL 12

Expert Comment

by:florin_s
ID: 39659158
what dose an internet message header say, from one of these e-mails?
0
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.

 
LVL 25

Expert Comment

by:Mohammed Khawaja
ID: 39659181
Check www.mxtoolbox.com and post the results.
0
 
LVL 4

Expert Comment

by:Naushad shaikh
ID: 39659243
You are getting email bounce from those recipient  email domain which are configure for the revers lookup , these server are checking your PTR record  no matter you send email with your smarthost  or directly with your exchange server . you have to configure your PTR with you ISP end for your server ISP which you are using for public IP for your exchange server .till time reverse query will fail for your server (genzone.net). this issue will remain same.because your email header consist xyz@genzone.net what is public IP for this server and is name and IP matching
0
 
LVL 63

Accepted Solution

by:
Simon Butler (Sembee) earned 500 total points
ID: 39663521
You don't need an MX record.
However you must have a PTR record set.
You will also need a valid host name that points to your server and have that host name set as the FQDN.

Call Demon Internet and get them to set a PTR. Then wait. They only update once a day (at 5pm) so you will have to wait until they do that.

If you are sending email it would also help if the SPF record on the domain was setup as well.

Simon.
0

Featured Post

 [eBook] Windows Nano Server

Download this FREE eBook and learn all you need to get started with Windows Nano Server, including deployment options, remote management
and troubleshooting tips and tricks

Question has a verified solution.

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

There are times when we need to generate a report on the inbox rules, where users have set up forwarding externally in their mailbox. In this article, I will be sharing a script I wrote to generate the report in CSV format.
A couple of months ago we ran into an issue that necessitated re-creating our Edge Subscriptions. However, when we attempted to execute the command: New-EdgeSubscription -filename C:\NewEdgeSub_01.xml we received an error indicating that the LDAP se…
In this video we show how to create an email address policy 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…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…
Suggested Courses

627 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