dovecot

To troubleshoot Dovecot authentication failures, use `doveadm` commands to test user login credentials and inspect the authentication configuration within `dovecot.conf`. This helps identify mismatched password databases or incorrect authentication mechanisms causing the access issue.

The best way to manage mail quotas and mailbox operations is using `doveadm` commands. This tool allows administrators to list user mailboxes, check current quota usage, and enforce storage limits defined in the Dovecot configuration files.

To check the status of your Dovecot IMAP server when users cannot access email, use `systemctl` to verify the service is running. If it is active, inspect the `dovecot.conf` and `conf.d` files for configuration errors or test user authentication.

Dovecot handles SSL/TLS configuration through settings defined in its `dovecot.conf` and `conf.d` files. Properly configuring these parameters ensures encrypted client connections for IMAP and POP3, preventing TLS errors and securing email delivery.

Yes, you can use Dovecot for LMTP delivery alongside your existing configuration. The server supports LMTP delivery natively, and you can inspect or adjust the relevant settings within the `conf.d` files to ensure proper integration with your mail infrastructure.

Dovecot reports a configuration error after modifying `dovecot.conf` due to syntax issues or conflicting directives in the `conf.d` directory. Carefully inspect the configuration files and use `doveadm` to test the configuration before restarting the service via `systemctl`.