Log Message:
Update to 2.6.2. From the changelog:

  Fixed smtp_filter() to accept parameters to AUTH PLAIN when the MUA sends the
    authentication information with the command instead of waiting for another
    prompt.
  Changed find_address() to strip BATV tags from addresses so whitelist/
    blacklist matching can still take place.  Reported by Walter Russo.
  Added utils/passwordcheck to help troubleshoot SMTP AUTH problems.
  Added more logging to exec_checkpassword() to aid troubleshooting.