## SecurityOptions enumeration (5 values)

Security mode for a mail client

| Value | Description |
| --- | --- |
| None | Connection is not secured. |
| SSLExplicit | Uses the STARTTLS command to start SSL/TLS connection. |
| SSLImplicit | Establishes a SSL/TLS connection first. |
| SSLAuto | Uses SSL/TLS implicit or SSL/TLS explicit mode automatically. |
| Auto | Auto selection mode |