Apple mail server port

The default ports used by Apple Mail Server (also known as Open Directory or Directory Service) are:

• IMAP (Incoming Mail): 143
• IMAPS (Secure Incoming Mail): 993
• SMTP (Outgoing Mail): 25
• SUBMISSION (Secure Outgoing Mail): 587

Note that these ports may be changed or customized depending on your specific setup and configuration.

Here are some additional details:

• IMAP (143) is used for retrieving email messages from the mail server.
• IMAPS (993) is used for retrieving email messages from the mail server over a secure connection (TLS/SSL).
• SMTP (25) is used for sending email messages from the mail client to the mail server.
• SUBMISSION (587) is used for sending email messages from the mail client to the mail server over a secure connection (TLS/SSL).

It's worth noting that Apple Mail Server also supports other protocols and ports, such as POP3 and POP3S, but IMAP and SMTP are the most commonly used.