Communication apparatus and communication control method in the apparatus

摘要

A communication apparatus capable of communicating with a server connected to the apparatus via a network. When a mail message is received from a POP3 server, it is determined whether or not an error exits in the mail message. If it is determined that an error exits, unique ID of the mail message is registered. If a number of a mail message having the same unique ID as the registered unique ID is received, reception of the mail message is rejected.