Brian - no offense, but that's absurd. My other various emails - google.com, my company email, etc. don't have this.
And I certainly travel constantly (let me put it to you this way...I'll be back in the US around Easter) to multiple countries.
Having to constantly call with my IP address from this hotel or that client site or when using my iPhone near this cell tower...seriously? You know that's just plain not going to work.
This level of security needs to be rethought in a globalized, multi-national world where your customers travel and access/use email outside of the United States on their smartphones and laptops.
Now, what other technology solutions does Cox have? Perhaps you have separate server with more stringent AV, AM, et all on it that I should be pointing to rather than the default home customer server?