exchange server

bwaldorf · 03-17-2009, 01:14 PM

Hi all!
I am sending an email to a company and when I send it it is getting hung in the que and when I click on it the message is, "The remote server did not respond to a connection attempt."

I have researched this and believe it to be related to DNS, however all of my lookups resolve my address and name fine. Also the NDR numbers on the return message is #4.4.7 see below;

Your message did not reach some or all of the intended recipients.

Subject: testing
Sent: 3/6/2009 9:45 AM

The following recipient(s) could not be reached:

test@xxxxusa.com on 3/8/2009 10:53 AM
Could not deliver the message in the time limit specified. Please retry or contact your administrator.
<mail.server.com #4.4.7>

This link gives a list of the ndr codes and meanings and it states #4.4.7 lies with the receiving servers connector.
http://www.computerperformance.co.uk...e%202003%20NDR

they are able to receive email from everyone but us, we have no problems with other people just them. We are not on a blacklist, I have done my dnsstuff.com also this is a good site too, http://www.mxtoolbox.com/index.aspx. I went to this site and did a diagnostics and blacklist check on my server and everything returned was good.

Unfortunately the other company of course is not cooperating and assumes that because they are getting other emails that the problem lies on my side.

Any help is greatly appreciated

Tekmazter · 03-21-2009, 10:46 AM

Try testing by using telnet

telnet to port 25 at the domain name you're attempting to email and then begin to attempt manually sending an email.

More than likely if this is the only domain you cannot email then it's probably the remote side, but these types of tests would better validate this.

http://technet.microsoft.com/en-us/l...EXCHG.65).aspx

Tekmazter · 03-21-2009, 10:49 AM

One footnote to this ...

You should attempt this test from a host which is publicly translated to the known IP of your mail sender. Good admins will block inbound mail attempting to send mail for a domain from a system which does not verify thru an MX record lookup.

03-17-2009, 01:14 PM	#1 (permalink)
bwaldorf Registered User Join Date: Oct 2008 Location: Oakdale, PA Posts: 16 OS: xp sp3	exchange server Hi all! I am sending an email to a company and when I send it it is getting hung in the que and when I click on it the message is, "The remote server did not respond to a connection attempt." I have researched this and believe it to be related to DNS, however all of my lookups resolve my address and name fine. Also the NDR numbers on the return message is #4.4.7 see below; Your message did not reach some or all of the intended recipients. Subject: testing Sent: 3/6/2009 9:45 AM The following recipient(s) could not be reached: test@xxxxusa.com on 3/8/2009 10:53 AM Could not deliver the message in the time limit specified. Please retry or contact your administrator. <mail.server.com #4.4.7> This link gives a list of the ndr codes and meanings and it states #4.4.7 lies with the receiving servers connector. http://www.computerperformance.co.uk...e%202003%20NDR they are able to receive email from everyone but us, we have no problems with other people just them. We are not on a blacklist, I have done my dnsstuff.com also this is a good site too, http://www.mxtoolbox.com/index.aspx. I went to this site and did a diagnostics and blacklist check on my server and everything returned was good. Unfortunately the other company of course is not cooperating and assumes that because they are getting other emails that the problem lies on my side. Any help is greatly appreciated

03-21-2009, 10:46 AM	#2 (permalink)
Tekmazter Registered User Join Date: May 2008 Posts: 177 OS: XP / 2K3 / RHE / HP-UX	Re: exchange server Try testing by using telnet telnet to port 25 at the domain name you're attempting to email and then begin to attempt manually sending an email. More than likely if this is the only domain you cannot email then it's probably the remote side, but these types of tests would better validate this. http://technet.microsoft.com/en-us/l...EXCHG.65).aspx

03-21-2009, 10:49 AM	#3 (permalink)
Tekmazter Registered User Join Date: May 2008 Posts: 177 OS: XP / 2K3 / RHE / HP-UX	Re: exchange server One footnote to this ... You should attempt this test from a host which is publicly translated to the known IP of your mail sender. Good admins will block inbound mail attempting to send mail for a domain from a system which does not verify thru an MX record lookup.