IpConfig/Username Registry Key
Specifies the Username required for SMTP Authentication. This may or may not
include the domain as this depends on the requirements of the particular
server. SMTP Authentication is used ONLY when a MailHost is defined and when
both the Username and Password keys are valid.
The Username must be entered through the WebUI or by the IPCONFIG command.
Upon entering or re-entering the Username a Password will be requested and
confirmed. The password must be encrypted by the system before it is saved.
This cannot be done manually.
HELP Topics: IPCONFIG