Unless you are going to have "Perzon Onely" at "perzon@company.com" and "Perzon Twoly" at "perzon@company.com.au", I would recommend using only the main .com ve

Unless you are going to have "Perzon Onely" at "perzon@company.com" and "Perzon Twoly" at "perzon@company.com.au", I would recommend using only the main .com version while providing forwarding from any non-.com to the .com. In other words, if there is no intent of having the same name mean different people or different departments on the different locations, then they should all use the same location's address.