protocol

Syntax:	`protocol imap \| pop3 \| smtp;`
Default:	—
Context:	`server`

Sets the protocol for a proxied server. Supported protocols are IMAP, POP3, and SMTP.

If the directive is not set, the protocol can be detected automatically based on the well-known port specified in the listen directive:

imap: 143, 993
pop3: 110, 995
smtp: 25, 587, 465

Unnecessary protocols can be disabled using the configuration parameters --without-mail_imap_module, --without-mail_pop3_module, and --without-mail_smtp_module.

Links:

https://nginx.org/en/docs/mail/ngx_mail_core_module.html#protocol

doc_nginx

2025-01-10 15:47:30

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