IMAP4 requires port ____ to be open. seenagape 12 years ago IMAP4 requires port ____ to be open. A.80 B.3869 C.22 D.21 E.23 F.25 G.110 H.143 I.443 Explanation:The current version of IMAP (IMAP4) uses port 143 and TCP for connection.Reference: Security + (SYBEX) page 130 ← Previous question Next question →