Ahostisexpectedtobeamailrelayorreceivingendpoint.Whichofthefollowingdaemonsshouldbelisteningforconnectionsonport25?()A.ftpdB.imapdC.pop3dD.sendmail
题目
Ahostisexpectedtobeamailrelayorreceivingendpoint.Whichofthefollowingdaemonsshouldbelisteningforconnectionsonport25?()
A.ftpd
B.imapd
C.pop3d
D.sendmail