what is DNS suffix Share on Facebook Post on reddit Tweet on Twitter Share on LinkedIn Home › Forums › Microsoft Networking and Management Services › DNS › what is DNS suffix This topic has 3 replies, 3 voices, and was last updated 4 years ago by Blood. Viewing 1 post (of 1 total) Author Posts hamed barabadiMember Aug 04, 2016 at 7:34 am #166527 hi. what is DNS suffix? what is primary DNS suffix? what is connection-specific DNS suffix? if possible explain about the options that have drawn a red line. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.