Advanced Server Configuration: Rejecting Junk Facsimile

By default HylaFAX will accept inbound facsimile from any caller. If the QualifyTSI configuration parameter is setup then HylaFAX will receive inbound facsimile only if the caller sends an acceptable Transmitting Subscriber Identification (TSI) string; a string that uniquely identifies who the sender is. HylaFAX determines which TSI are acceptable by using the rules given in the file specified with QualifyTSI. This mechanism provides a way to automatically reject junk facsimile. Note however that because a TSI is not authenticated in any way it is a simple matter for a caller to masquerade as an acceptable sender and bypass the access control mechanism. Consult tsi(4F) for complete details of this facility.Groups of modems can be referenced by name using a facility termed modem groups. A modem group defines a logical name for a set of modem devices on a server. This name can be used by clients in the same way that a specific modem device is used. The default modem to use for outbound jobs, “any”, is actually just a predefined modem group. Modem groups are useful for groups that want to logically partition a set of modems on a single server.

Modem groups are defined with the ModemGroup configuration parameter. Each definition specifies a name and a regular expression that identifies the set of modems that are to be included in the group. For example,