Server relay allows server to relay mails to a specific mail server instead of saving or sending mails directly.

依设定转寄到特定伺服器去，让下一个伺服器代做原本该寄信或存信的工作。

youdao

Server relay allows server to relay mails to a specific mail server instead of saving or sending mails directly.

依设定转寄到特定伺服器去，让下一个伺服器代做原本该寄信或存信的工作。

youdao