News2Mail: Using whitelist.example you can try to post articletest.accepted and articletest.denied. The first one will be accepted by pygs, second one rejected try to type something like (as normal user): $ pygn2m -TVt your@local.address -s your@local.address -e your@local.address \ -w /usr/share/doc/pyg/example/whitelist.example -l /tmp/pyg.log \ < /usr/share/doc/pyg/example/one_article_example It will reject to post articletest.denied because there are no 'From:' command in any section of whitelist.example. While it will post articletest.accepted because in the third section there is "From: = 'kame@inwind.it'" command. using -T option will only test, without opening a connection to your MTA. -V will change in verbose mode. see manpage for more info. Mail2News: /usr/share/doc/pyg/example/mail is a simple mail in unix mbox format, you can use it to test m2n functionality. $ pygm2n -TVn local.news.group < /usr/share/doc/pyg/example/mail format a news article to be posted to local.news.group newsgroup. Since -TV is present, it doen't open any connection.