iredmail-doc/en_US/mua/_summary.md

> POP3 service: port 110 over TLS (recommended), or port 995 with SSL.
 
> IMAP service: port 143 over TLS (recommended), or port 993 with SSL.
 
> SMTP service: port 587 over TLS.
Sync upgrade tutorials: * Web server: Enable HSTS (HTTP Strict Transport Security) support. * SOGo: Fix improper settings in Apache/Nginx config file. New: en_US/troubleshooting/debug.roundcubemail.md. Improve en_US/overview/0-used.components.md: mention how to check software versions. 2015-12-02 19:30:45 -06:00			`> POP3 service: port 110 over TLS (recommended), or port 995 with SSL.`

			`> IMAP service: port 143 over TLS (recommended), or port 993 with SSL.`

			`> SMTP service: port 587 over TLS.`