How do I check if dovecot is being used?

I want to remove an old version of MySQL (using rpm) on a RHEL4 server and I found that a dovecot package depends on it. If dovecot is not needed then I could remove that too. How can I determine if dovecot is being used on this server? Are there any log files that would show its past use?

From serverfault Liam

• dovecot is a daemon that provides access to e-Mail via the POP3 and IMAP protocols. Is the server providing e-Mail services?

  The logging location will depend on your configuration in /etc/syslog.conf. Often the default log location will be /var/log/maillog. Dovecot uses the mail logging facility.

  If you want to see if dovecot is running, you can run ps aufx and look for the dovecot process.

  Liam : `ps aufx` does not show dovecot.

  Warner : If it is not running, it is fairly safe to say that it is not in use.

  Liam : If dovecot was used would "dovecot" appear in /var/log/maillog ?

  Warner : It depends on how syslog is configured to direct the `mail` facility. Potentially.

  Liam : Troubleshooting a server that hasn't had much attention in a few years, and suffered a power outage recently. It is hard to say what should or should not be running on it until something breaks. No mentions in 1 month of logs is reassuring enough for me. Thanks for your help!
  From Warner