nnrpd (5) - Linux Man Pages
nnrpd: file to specify hosts to be tracked by nnrpd.
NAMEnnrpd.track - file to specify hosts to be tracked by nnrpd.
DESCRIPTIONThis file, which is located in <pathetc in inn.conf>, specifies which hosts are to have their activities recorded during an nnrpd session. The nnrpd server reads it when first spawned by innd, provided readertrack in inn.conf is true; otherwise this file is not used.
Entries consist of one host specification per line, each line having two fields, separated by a colon:
The first field is either the FQDN of a host, or a domain name (in the form *.domain.com).
The second field is simply a segment of text which may be used to more easily identify the client, typically an e-mail address or other identifying mark.
nasty.foo.com:nasty [at] foo.com *.bar.com:VeryNastyClient