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How do I set up Exchange 2007 on SBS 2008 Using No-IP

Posted on 2010-01-06
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Last Modified: 2013-11-21
I set up my domain with godaddy.  I set up an account with no-ip because my ip on my router is dynamic from AT&T.  I cannot send or receive mail. No errors, it doesn't stay in the outbox.  I have configured a mail reflector in no-ip with the <servername>.no-ip.org address and a host with the same name.  I have configured godaddy account with mx record that no-ip gave me but every time i try to save it in the Total DNS configuration, it just...goes away.  Any help would be appreciated.  Thanks.
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Question by:cwbeach
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aleghart earned 2000 total points
ID: 26196151
If this is dynamic IP address, chances are you're internet service provider is blocking port 25, except for their own SMTP relays.

First, find out if this is the problem.

Solution 1: use their relay
Solution 2: use your own relay outside of your network, which will talk to you on something other than port 25.
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by:cwbeach
ID: 26199776
Do you mean use their smtp address like I would on my Outlook client?  I tried this on the Exchange Hub Connector and I got the following error when I tried sending email from my home workstation:  "Delivery is delayed to these recipients or distribution lists:" and "This message has not yet been delivered. Microsoft Exchange will continue to try delivering the message on your behalf. "  I got this error several hours after sending the email, but no errors again at the time I actually sent the email.
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by:aleghart
aleghart earned 2000 total points
ID: 26212074
"smart relay" which is what some people call that...where your mail server logs in to another SMTP relay and sends out mail...will still not work if you have port 25 blocked.

Checking port 25 should be first in troubleshooting.

1. find out if your ISP or network admin is blocking
2. use telnet commands to send test messages to verify connectivity
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