Fax user Introduction 11.. PPrriinncciippllee Some fax destination are restricted to only few users. Those users are identified with their email address and optionnally with their PGP signature. The access control principle of the mail to fax gateway is this · Fax zones and fax aliases are associated with fax rules. · A fax rule may define a list of users who can fax to any zones or aliases managed by this rule. · A fax rule may contain a list of users. 22.. UUsseerr ddeeffiinniittiioonn A user is identified by his email address. The user name is used as a reference only. The PGP signature is the public PGP key of this user. It allows the gateway to certify that a message originate from this user. This lets remote users use your email to fax gateway in a control fashion.