23. Authenticating an email client with virtual mailboxes and SNI

In this sixth bonus video for the ’hosting of an email server’ video series, we look at connecting an email client (Thunderbird) to our Raspberry Pi hosted email server which now uses Server Name Identification (SNI) and Virtual Mailboxes. We do this to show that the modified system works, but also to highlight a subtle change in how we authenticate the email client against a server using virtual users (mailboxes).