Email configuration does not support all required configuration parameters

Recently, I was trying to configure the OpenMRS email capabilities (MessageService and MailSender / Mail Session) to test out email capabilities.

I was using Gmail as an email service, and in order to configure this successfully, I found that I needed to set the following properties when creating the mail Session:

mail.from=myaddress@gmail.com
mail.user=myaddress@gmail.com
mail.password=anapikeythatisgeneratedingmailsecuritysettings
mail.transport.protocol=smtp
mail.smtp.host=smtp.gmail.com
mail.smtp.port=465
mail.smtp.auth=true
mail.smtp.starttls.enable=true
mail.smtp.ssl.protocols=TLSv1.2
mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory

This was is not possible to define using the existing Mail configuration, which only supports a subset of these properties. Specifically, mail.smtp.ssl.protocols and mail.smtp.socketFactory.class are not able to be configured.

This ticket aims to fix this by supporting a wider, more general range of mail configuration settings based on the "mail." prefix.

dkayiwa / ibacher let me know if you have any thoughts or concerns about this.