Solved

email not sending to a specific domain

Posted on 2015-01-06
5
5 Views
Last Modified: 2016-06-22
We have an Exchange 2010 server running on SBS2011. there is one specific domain we are not able to email. looking at the message queue it just sits in a Connecting or Retry status. Eventually getting an NDR message.

I ran nslookup -type=mx domainame and it resolves. I try to telnet and it gives me an error 421 4.3.2 system not accepting network messages... connection host lost

I have verified that GFI (Spam Solution) has the domain in the allow list.
0
Comment
Question by:350ztn
  • 2
5 Comments
 
LVL 34

Expert Comment

by:Seth Simmons
Comment Utility
sounds like the issue is on their side considering a) it is one specific domain and b) your telnet test fails
0
 
LVL 63

Expert Comment

by:Simon Butler (Sembee)
Comment Utility
Have you tried any of the public tools, like those at mxtoolbox, to see if the problem is widespread.
If those tools fail as well, then the problem is not yours.
If they are successful, then it could be that they have blacklisted you. Not a lot you can do without the other side assisting though.

Simon.
0
 

Author Comment

by:350ztn
Comment Utility
are there any other tests that I can run to ensure the problem does not lie within my network? I have checked the mxtoolbox and both my domain and the recipient domain test correctly, no errors. the only thing that I did see was when I run the microsoft remote connectivity wizard and select the smtp outbound. I test my domain and their domain and both are on a blacklist ABHL...but that is no longer managed and I can not make a request to remove my domain nor their domain from that list. mxtoolbox blacklsit check doesnt show either domain on a blacklist?
0
 

Accepted Solution

by:
350ztn earned 0 total points
Comment Utility
i was able to resolve the issue. found out the isp was on blacklist
0

Featured Post

Integrate social media with email signatures

Is your company active on social media? Do you also use email signatures? Including social media icons in your email signature is a great way to get fans for free. Let all your email users know you’re on social media quickly and easily, in a single click.

Join & Write a Comment

Suggested Solutions

Find out how to use Active Directory data for email signature management in Microsoft Exchange and Office 365.
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.
In this video we show how to create a Contact 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 Recipients >> Contact ta…
In this video we show how to create an Accepted Domain 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 >> Ac…

762 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

Need Help in Real-Time?

Connect with top rated Experts

9 Experts available now in Live!

Get 1:1 Help Now