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Supported protocols and ports on Hermes

Preferred settings

PortProtocol
587 SMTP + STARTTLS
143 IMAP + STARTTLS
993 IMAP + SSL (alternative to 143)

Supported but discouraged

PortProtocolNotes
25 SMTP + STARTTLS traditional outgoing mail port
465 SMTP + SSL non-standard; only used by old Microsoft programs to send mail
110 POP + STARTTLS use IMAP instead
995 POP + SSL use IMAP instead