What does the inability of a bank to ascertain a foreign investor's address indicate about the nature of service?

The reasoning behind why international service by mail was not allowed lies in the complexities associated with serving foreign parties in legal proceedings. In accordance with the Hague Convention on the Service Abroad of Judicial and Extrajudicial Documents, which governs how service can be made to parties outside of one's own country, specific protocols must be followed. If a bank cannot determine the foreign investor's address, it may indicate that the proper procedures for international service cannot be met, meaning that service by mail, which lacks verification and may not comply with the required legal standards, would not be permissible.

The requirement for proper and effective service to ensure that due process is respected is crucial, especially in international contexts. Additionally, due diligence typically refers to making reasonable efforts to find relevant information about a party; it doesn't directly relate to the legality of mail service. The other options, such as liability or jurisdictional issues, address different aspects of legal proceedings and do not pertain specifically to the notification process through international mail.