Im trying to figure out why the headers from an email sent from a mobile device on a wireless carrier have 2 ips in them.
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for <>; Thu, 12 Sep 2013 16:51:28 -0400
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Date: Thu, 12 Sep 2013 16:51:23 -0400
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Subject: Test nopro
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both of the ips belong to the wireless carrier. what is each one for? and why is there 2 of them? do they both identify the device that sent them or does just one identify the device that sent them? when i do a whatismyip.com when im surfing the net on my mobile device it lists my ip as being the same as the second ip in the headers.