How to setup Windows Server MX Record then pointing to External Domain?
I try to configure like this but always getting error
Windows Server MX Record Configuration
Domain Hosting MX Record Configuration
MX Record Lookup Failed
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user606684
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3A timeout usually points toward a firewall issue. – Gerald Schneider Dec 16 '20 at 17:52
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my firewall is open this port for inbound and outbound – user606684 Dec 17 '20 at 04:20
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It seems the IP address 180.241.131.83 is not reachable on port 25. To pass the test, you may need to contact your ISP to ensure port 25 is open.
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btw i was changed port to 587, is that problematic?, or i must open port 25 for this problem? – user606684 Dec 17 '20 at 04:19
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The MX record listens on port 25 by default. If it is not reachable,you may have trouble with receiving emails. – Kael Dec 17 '20 at 05:27
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No. As the MX record doesn't include a port. And the other mail servers will expect to connect to port 25. – Kael Dec 17 '20 at 07:18
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okayyy, ty so much, i think this will solved this problem, but unfortunately my ISP is blocking port 25 for prevent spam email... :( – user606684 Dec 17 '20 at 07:44