How are SMTP passwords stored in ColdFusion Administrator

When configuring a username and password for an SMTP mail server, I'd like to know where/how the password is stored on the server.

I did find out where the password file is stored for the ColdFusion administrator password: C:\ColdFusion2016\cfusion\lib\password.properties

However this isn't the SMTP server's password that we would enter into the password field under ColdFusion Adminstrator's Server Settings > Mail. Is this stored in the same manner-encrypted-or is is stored in a file in plaintext non-encrypted?

Thanks,

Mikael