COMPUTER NETWORKING

Detailed explanation-1: -An IMAP server listens on port number 143, while IMAP over Secure Sockets Layer (SSL)/Transport Layer Security is assigned port number 993.

Detailed explanation-2: -IMAP ports 143 – this is the default port which does not provide any encryption. Port 993 is the secure port for IMAP and it works over TLS/SSL encryption.

Detailed explanation-3: -Description: Imap protocol is used by eMail clients for the retrieval of their eMail from designated eMail “post office” servers. Email Clients such as Microsoft Outlook, Netscape, Eudora, and many others, using imap protocol to retrieve their eMail, connect to port 143 of a remote eMail server.

Detailed explanation-4: -IMAP4 clients can create, rename, and delete mailboxes (usually presented to the user as folders) on the server, and copy messages between mailboxes. Multiple mailbox support also allows servers to provide access to shared and public folders.