I presume that you own the domain indianacountyceo.com and have it hosted somewhere.
You would need to change the MX records for your domain to direct your e-mail correctly. Not having any idea how this was achieved in the past I can't get much more specific than that.
Have a look at the search results from: https://duckduckgo.com/?q=changing+mx+records
One of the tutorials about this should at least get you started so that you or your appointed tech geek can begin digging around to find out how things are configured and how to change them.
Brian AKA Bri the Tech Guy (my website address is in my profile) Windows 10 Home, 64-bit, Version 1709, Build 16299
Here is a test to find out whether your mission in life is complete. If you’re alive, it isn’t.
~ Lauren Bacall