The destinationfilter channel keyword (synonymous with the
obsolete channelfilter keyword) enables message filtering
on the destination channels to which it is applied. The
sourcefilter channel keyword enables message filtering on
the source channels to which it is applied. These keywords each have
one required parameter which specifies the path to the corresponding
channel filter file associated with the channel.
The syntax for the destinationfilter channel keyword is
destinationfilter URL-patternand similarly the syntax for the
sourcefilter channel
keyword is
sourcefilter URL-patternwhere
URL-pattern is a URL specifying the path to
the filter file for the channel in question. For instance, suggested
usage on OpenVMS is
destinationfilter file:///PMDF_TABLE:channel-name.filteror on UNIX or NT
destinationfilter file:///pmdf/table/channel-name.filterwhere
channel-name is the name of the channel,
e.g., l, tcp_local, ln_local, etc.
Channel filter files must be world-readable. Note that a channel filter
file will be owned by the PMDF server account---usually PMDF on
OpenVMS, or pmdf on UNIX.