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  • Status: Solved
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not recieving mail from domain

We have exchange 2003, I am not sure what they have, their tech assures me its not their end. We can send to them without problems. She tells me that she gets an email 2 days later saying its been delayed too long. I have checked our firewall, and exchange log and their ip doesn't show up as incoming anywhere, so I am lead to believe there is some problem along the line, what test can I run to see where its stopping?

Test so far:
We cannot ping their server
ran dnsreport.com - our mail server checks out ok, as does theirs with the exception of "Mail server name in host"
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compuken
Asked:
compuken
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1 Solution
 
compukenAuthor Commented:
I just noticed they are using the same nameservers that we were using. Since we changed nameservers, we also changed ip addresses. How do we tell if the old nameserver is using our new ip address?
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SembeeCommented:
This is an issue the remote site needs to fix.
They need to do an nslookup on your domain.

For example... microsoft.com:

C:\>nslookup
Default Server:  server.domain.co.uk
Address:  192.168.1.1

> set type=mx
> microsoft.com
Server:  server.domain.co.uk
Address:  192.168.1.1

Non-authoritative answer:

microsoft.com   MX preference = 10, mail exchanger = mailc.microsoft.com
microsoft.com   MX preference = 10, mail exchanger = maila.microsoft.com
microsoft.com   MX preference = 10, mail exchanger = mailb.microsoft.com

maila.microsoft.com     internet address = 131.107.1.7
maila.microsoft.com     internet address = 131.107.1.6
mailb.microsoft.com     internet address = 131.107.3.123
mailb.microsoft.com     internet address = 205.248.102.77
mailc.microsoft.com     internet address = 205.248.102.78
mailc.microsoft.com     internet address = 205.248.102.79
>

The information they get back should be the same as what you have set.

Once done, you could get them to flush the DNS cache on their Exchange server (ipconfig /flushdns) and on the domain controllers in the DNS server applet.

Simon.
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compukenAuthor Commented:
I went to their nameserver people and had them check, the nameserver still had our record on file, and it was the old IP address, they changed it and currenty checking if they have it anywhere else in their systems, when they ping mail.ourdomain.com they get our old ip, once they delete the mx record it should be fixed, as long as the company don't have the dns cached, they will pull the new record from the nameserver people and it should be fixed.
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