This setting allows you to specify the default “from” address for system notification e-mails. This address must be valid according to your outgoing mail server (see documentation for configuring SMTP).

$GLOBALS['LIVEWHALE_CONFIG']['FROM_ADDRESS']='do-not-reply@lwcal.com'; // default for LiveWhale Calendar; enable SMTP to use a @myschool.edu address

When enabling SMTP, if this address is different from your SMTP from address, this address will only be used as the default “reply-to” address instead of the default “from” address.