Dovecot - IMAP and POP3 Server

Linux Tutorials - Herong's Tutorial Examples

∟Dovecot - IMAP and POP3 Server

This chapter provides introductions and tutorial examples about Dovecot - IMAP and POP3 Server. Topics include installing, configuring, and starting Dovecot; testing Dovecot server using POP3 and IMAP commands with 'telnet'.

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What Is Dovecot

Install and Configure Dovecot on CentOS

Test Dovecot IMAP Server with "telnet" Client

STARTTLS (Opportunistic TLS) on IMAP Port 143

IMAPS Service on Port 993 in Dovecot

Test Dovecot POP3 Server with "telnet" Client

STARTTLS (Opportunistic TLS) on POP3 Port 110

POP3S Service on Port 995 in Dovecot

Keep Deleted Emails on Dovecot

Turn on Dovecot Server Logging for Troubleshooting

Replace Self-Signed Root Certificate on Dovecot

"doveadm" Command - Dovecot's Administration Utility

Takeaways:

Dovecot is a free and open-source POP3 and IMAP server that allows clients to retrieve electronic mails from Linux systems.
Dovecot configuration files is located in /etc/dovecot/ directory.
Dovecot server accepts IMAP client requests at port 143 with Opportunistic TLS, also called STARTTLS, option.
Dovecot server accepts IMAPS client requests at port 993 with SSL/TLS started automatically.
Dovecot server accepts POP3 client requests at port 110 with Opportunistic TLS, also called STARTTLS, option.
Dovecot server accepts POP3S client requests at port 995 with SSL/TLS started automatically.
Dovecot server can keep deleted emails hidden and marked as "POP3Deleted" in POP3 service.
You should replace the default self-signed server certificate with a new one that matches your Dovecot server identity.