| 摘要 |
PROBLEM TO BE SOLVED: To suppress repetition of mail transmission trial to a mail server where failures occur at each time of transmitting mail when failures occur at some mail servers of a destination domain of mail transmission, which occurs in a conventional mail gateway system.SOLUTION: A communication system includes: collecting convergence statistical information having hierarchical structure for each MX record and each host; and determining an IP address of the host having high possibility that mail transmission is successful using the collected convergence statistical information. |
