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Cant receive external emails on sub-domain

Posted on 2014-03-17
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Last Modified: 2014-03-22
Hi Guys\Girls

I have a Exchange Server 2010 running domain mescorp.com.au. This domain can send and receive internally and externally fine
There is a sub-domain attached to mescorp.com.au called usa.mescorp.com.au. This sub-domain can send\receive internally and send externally but not receive externally

I know this is a DNS issue but I dont know what I'm missing in the DNS records
I have put this MX record into DNS - usa.mescorp.com.au -> mail.mescorp.com.au. Priority set at 20

The main domain MX record is set at - mescorp.com.au -> mail.mescorp.com.au. Priority set at 10 and again that is working fine

Any help is greatly appreciated

Thanks in advance

Michael
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Question by:tiemannitservices
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6 Comments
 
LVL 6

Expert Comment

by:rick81
ID: 39935871
your mx setup looks correct.  i check it at mxtoolbox.

a telnet of usa.mescorp.com.au 25 fails and points to webhost.tienmannhostingservices.com.au  "we do not authorise the use of this system to transport unsolicited email, blah, blah, blah

have you only recently updated your DNS records for usa.mescorp?
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LVL 12

Expert Comment

by:Md. Mojahid
ID: 39935961
Is that the real subdomain name, abc.gunung.com? If so, you are missing the mx records in your public DNS server.

http://www.mxtoolbox.com/SuperTool.aspx?action=mx%3aabc.gunung.com
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LVL 6

Expert Comment

by:rick81
ID: 39935969
the sub domain is usa.mescorp.com.au
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Accepted Solution

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tiemannitservices earned 0 total points
ID: 39936025
I just checked it then as well and its working. It just took a lot longer than expected to update
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LVL 6

Expert Comment

by:rick81
ID: 39936027
maybe i should get the points for this one?  glad your problem is sorted.

your mx setup looks correct.  i check it at mxtoolbox.

a telnet of usa.mescorp.com.au 25 fails and points to webhost.tienmannhostingservices.com.au  "we do not authorise the use of this system to transport unsolicited email, blah, blah, blah

have you only recently updated your DNS records for usa.mescorp?
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Author Closing Comment

by:tiemannitservices
ID: 39947253
What I had done was correct it was just a matter of time
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