There is a standard for this, most US companies I encountee over 100 people seems to support at least the security, info, postmaster, and support mailboxes at l

There is a standard for this, most US companies I encountee over 100 people seems to support at least the security, info, postmaster, and support mailboxes at least. https://www.rfc-editor.org/rfc/rfc2142 https://www.rfc-editor.org/rfc/rfc2142