From: address to email sent to domain owners
If a virtual server is owned by a reseller, you may want email send by
Virtualmin (such as bandwidth quota warnings or new script notifications) to
come from the reseller's email address, rather than the master sysadmin. To
enable this, select Reseller's address (if any) - otherwise, leave
Address set above selected.
If a virtual server does not have a reseller or the reseller doesn't have
an address, the Reseller's address mode will fall back to using the
global From: address instead.