Install an SSL server certificate (see 23.5 Configuring Encryption and Certificate-Based Authentication.
Edit the ImapProxyAService.cfg file and uncomment the relevant SSL settings.
If you want SSL and POP, edit the PopProxyAService.cfg file and uncomment the relevant SSL settings.
Additionally, you must edit the AService.cfg file and add |995 after the 110 in the ServiceList setting.
Make sure that the BindDN and BindPass options are set in the ImapProxyAService.cfg and PopProxyAService.cfg files.
You should also set the DefaultDomain option to your default domain (the domain to use for unqualified user names).
If you just want server-side SSL support, you are finished. Start the MMP with the following command in the msg-svr-base/sbin directory:
If you do not want to use SSL between the MMP and the backend server, then set the SSLBacksidePort option to 0 in the ImapProxyAService.cfg or PopProxyAService.cfg MMP configuration files.