單項(xiàng)選擇題空殼郵件服務(wù)器主配置文件中哪個參數(shù)用于設(shè)置空殼郵件服務(wù)器收到郵件后轉(zhuǎn)發(fā)給哪個主郵件服務(wù)器?()

A.mydomain
B.myorigin
C.relay_host
D.mynetworks


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1.單項(xiàng)選擇題下面哪個命令是用于將dovecot服務(wù)加入開機(jī)啟動?()

A.systemctl status dovecot
B.systemctl start dovecot
C.systemctl stop dovecot
D.systemctl enable dovecot

2.單項(xiàng)選擇題下面哪個命令用于安裝郵件傳輸代理?()

A.yum install dovecot
B.yum install telnet
C.yum install telnet-server
D.yum install postfix