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IT Atlas

Protocol

IMAP / IMAPS

Mailbox access

Port 143 / 993TCPEncrypted: Optional

Record

Ports
143, 993
Transport
TCP
Encryption
Optional
Typical use
Mail clients

Security considerations

Legacy IMAP basic auth is a common MFA bypass; disable it

Where this protocol is explained

Exchange Online

Microsoft's cloud email service, including transport rules, connectors, mailbox permissions and hybrid coexistence with on premises Exchange.

Topics that use this protocol

Exchange Online

Microsoft's cloud email service, including transport rules, connectors, mailbox permissions and hybrid coexistence with on premises Exchange.

Other protocols over TCP

DNS over TLSFTPFTPSGlobal CatalogHTTPKubernetes APILDAPSMicrosoft SQL ServerMySQL / MariaDBOracle TNS

In the knowledge graph

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Explore IMAP / IMAPS in the knowledge graph