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Hi All, My main adsl line with a static IP keeps dropping connection. I have set up a USB 3g dongle with dynamic ip as a temporary backup. i have also created a host name with dyndns free. How do i get my emails to go through to the back up connection when my main adsl line is down?
Answer by Cry Havok · Sep 28, 2011 at 05:12 PM
You'd want to set up the hostname that resolves to your 3G dongle's IP address as a lower priority MX (higher number) for your domain. This, of course, assumes that the WAN IP for the 3G link is not an [RFC 1918 IP address]. If it is then you cannot use it for remote access or mail delivery to your mail server. : http://www.dyndnscommunity.com/questions/9259/whats-this-rfc1918-stuff-you-keep-talking-about.html
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