To establish a Web site, a person must have an Internet service provider or hosting company, register a domain name, and acquire domain name servicing. Pfizer, Inc., Pfizer Ireland Pharmaceuticals, and Warner-Lambert Co. (collectively, Pfizer) filed a suit in a federal district court against Domains By Proxy, Inc., and other persons alleged to be behind two Web sites—genericlipitors.com and econopetcare.com. Among the defendants were an individual and a company that, according to Pfizer, were located in a foreign country. Without investigating other means of serving these two defendants, Pfizer asked the court for permission to accomplish service of process via e-mail. Under what circumstances is service via e-mail proper? Would it be appropriate in this case? Explain.