Anemailserverhasbeeninstalled;however,thestaffreportsthattheyareunabletoreceiveemail fromexternalemailaddresses,buttheycanemaileachother.WhichofthefollowingistheMOSTlikely reasonforthis?()
A.ThecompanyfirewallisblockingSMTPports.
B.TheDHCPserverismisconfigured.
C.TheDNSserverisonlyresolvinginternalnamespaces.
D.TheemailservershouldbeconfiguredtoresolvenamesbyIPaddresses.
时间:2023-09-20 05:24:27
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