smtp in not working when i do failover
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my failover works between 2 isps. However smtp in does not work when the firewall switches to isp b. The nat rules for the 2 links are there but still no luck accessing incoming smtp traffic on isp b, however on isp a, all works well. What could i be missing ?
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How do you manage DNS during a failover? I assume your MX record points to an IP or hostname that resolves to your isp a WAN address, or does it point to both?
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im using the google dns servers and the mx record points to an ip
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Which IP does it point to?
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to isp a
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Add another MX record to point to your isp b WAN address. That way mail should be able to reach your mail server no matter which gateway is up.
