1leafnode(8)                 System Manager's Manual                leafnode(8)
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3
4

NAME

6       leafnode - NNTP server for small (dialup) sites
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8

SYNOPSIS

10       leafnode
11
12

DESCRIPTION

14       Leafnode  is a USENET package intended for small sites, where there are
15       few users and little disk space, but where a large number of groups  is
16       desired.
17
18       The  design  of leafnode is intended to self-repair after problems, and
19       to require no manual maintenance.
20
21       The leafnode program itself  is  the  NNTP  server.   It  is  run  from
22       inetd(8),  xinetd(8) or tcpserver when someone wants to read news.  The
23       other parts of the package, fetchnews and texpire, are responsible  for
24       fetching new news from another server, and for deleting old news.
25
26

ACCESS CONTROL

28       No authentication or access control is supported.  This is a deliberate
29       omission: Implementing this is a job which should  not  be  redone  for
30       each and every service.
31
32       It  is  mandatory  that you use external access control mechanisms like
33       tcpd, inetd/xinetd compiled with libwrap  support,  tcpserver  with  -x
34       option and the like and that these are in effect.  tcpd and libwrap are
35       components of Wietse Venema's fine tcp_wrappers package.
36
37       As a very rough last line of defense against abuse, leafnode will  drop
38       connections from outside your LANs by default. You can configure leafn‐
39       ode to let go of this restriction (look for the allowstrangers option),
40       but  don't  do  that  unless tight access control is in place.  Someone
41       will abuse your computer sooner or later. Promised.
42
43       I recommend that either firewalling or tcpd be used for access control.
44
45

FILES

47       All these files and directories must be readable by the user "news". It
48       is  recommended  that, unless otherwise stated, that the user "news" be
49       the only user in the group "news" and these files belong to "root:news"
50       (user:group)  so  leafnode  cannot  modify your configuration or filter
51       files.
52
53       /etc/leafnode should not be writable by the user "news", but it must be
54       executable  for  at  least any of the group that the user "news" is in.
55       /etc/leafnode/config contains the configuration parameters  for  leafn‐
56       ode.   It  must  not  be writable by the user "news". Set this to owner
57       root:news and mode 640. For details, see CONFIGURATION below.
58
59       /var/spool/news must also be readable and writable by the user  "news".
60       It  contains  the  news articles; e.g.  /var/spool/news/alt/fan/agulbra
61       contains the articles in the  alt.fan.agulbra  group.   Each  directory
62       contains  articles  in  numbered  files (decimal numbers, monotonically
63       increasing), and a special file called  .overview  which  contains  the
64       "Subject",  "From",  "Date",  "Message-ID",  "References",  "Bytes" and
65       "Lines" headers for each article in the group.
66
67       Several subdirectories are special:
68
69       /var/spool/news/leaf.node contains the files that leafnode creates dur‐
70       ing  operation,  for example the groupinfo file which contains informa‐
71       tion about each USENET newsgroup. This file is built by fetchnews  (8).
72       You  can  force  a  complete  rebuild  of the groupinfo file by calling
73       fetchnews with the parameter -f (see fetchnews (8)).
74
75       /var/spool/news/out.going contains local postings that fetchnews(8)  is
76       to  pass to the upstream NNTP server. After a posting has been success‐
77       fully written to disk, its u+r permission flag is  set.  This  flag  is
78       interpreted  by  fetchnews(8) as "you may post this article". This pre‐
79       vents fetchnews from posting articles that  are  still  being  received
80       from newsreaders. (Note: versions 1.9.23 to 1.9.32 inclusively used u+x
81       instead, which caused some "stuck post" problems with articles  in  the
82       spool when a prior leafnode version was updated to one of these 10 ver‐
83       sions. Updating to leafnode 1.9.33 or later fixes the problem.)
84
85       /var/spool/news/failed.postings  contains  local  postings   that   the
86       upstream  server  rejected.   fetchnews(8)  will  create  files in this
87       directory, but none of the leafnode programs will  delete  anything  in
88       it.
89
90       /var/spool/news/message.id contains hard links to each message; this is
91       used in place of the dbz database typically used by bigger servers.  (A
92       directory such as this is probably more efficient for the small servers
93       leafnode is designed for but scales very badly.)
94
95       /var/spool/news/interesting.groups contains one file for each group  an
96       NNTP  client  has asked to read.  leafnode will update the ctime (ls -l
97       usually shows the mtime, try ls -lc) of the relevant file when a  LIST‐
98       GROUP, XOVER, XHDR, STAT, HEAD, BODY or ARTICLE command is issued, when
99       a GROUP or LIST ACTIVE command (the latter only with  a  single  group,
100       not  with patterns) is issued for an interesting group (to avoid unsub‐
101       scribing low-traffic groups that are still read) and fetchnews(8)  will
102       retrieve all new articles in all groups whose files have been either
103
104              - touched during the past two days, or
105
106              -  touched  more  than  once,  and at least once within the past
107              week.
108
109       The timeout is configurable through the  config  file  variables  time‐
110       out_short and timeout_long. See also fetchnews(8) for the -n option.
111
112       /etc/inetd.conf  or  /etc/xinetd.conf  contains the configuration which
113       starts leafnode.  It is strongly recommended to start leafnode as  user
114       news.
115
116

ENVIRONMENT

118       LN_REJECT_POST_PRE
119              If  this  variable exists, all POST commands are rejected with a
120              400 code.  Use only for debugging clients.
121
122       LN_REJECT_POST_POST
123              If this variable exists, the POST command is rejected with a 400
124              code after the article and CRLF.CRLF has been received. Use only
125              for debugging clients.
126
127

CONFIGURATION

129       All configuration is done using the  file  /etc/leafnode/config,  which
130       may  include  a  filter  description  file,  filterfile  for  short, as
131       described below.
132
133       For the purposes of this section, whitespace shall  be  defined  as  an
134       arbitrary  sequence consisting of one or more SPACE or HTAB characters,
135       ASCII positions 32 and 9, respectively.
136
137       The configuration file is strictly line-oriented with  LF  or  CRLF  as
138       line terminator.
139
140       Empty  lines and lines consisting of only whitespace, possibly followed
141       by a comment (introduced by a hash mark (#) and extending  through  the
142       end of the line), are skipped.
143
144       All  other  lines  have  exactly  three  mandatory fields, a plain text
145       parameter, an assignment character (=) optionally surrounded by  white‐
146       space  and  a  value.   The  value  is either plain text or - new since
147       leafnode v1.11 - a string  in  double  quotes  with  trivial  backslash
148       escape (see below).
149
150       Plain  text  starts  at  the first non-whitespace character and extends
151       through the last non-whitespace character on the line  that  is  not  a
152       comment. A trailing comment on a line is skipped.
153
154       Quoted  strings are enclosed in double quote characters (").  The back‐
155       slash character (\) is skipped, but it copies the immediately following
156       character  verbatim,  so  that  you can specify the backslash itself by
157       doubling it (\\) or a double quote character as part of the  string  by
158       preceding  it with a backslash (\"); the hash mark has no special mean‐
159       ing as command introducer inside quoted strings. Text after the end  of
160       the  string  is  silently ignored (this may change in future versions).
161       Comments after quoted strings are ignored.
162
163       MANDATORY PARAMETERS
164
165       These parameters must be specified for leafnode to work.
166
167       server = news02.example.com
168              "server" is used by fetchnews (8) to select what NNTP  server(s)
169              to  retrieve  news  from  and  to post your articles to. You can
170              specify more than one news server; in  that  case,  the  servers
171              will be queried from the top down. If you want to post articles,
172              at least one of your servers should allow you to post.   In  the
173              example above, news02.example.com is the news server.
174
175              This  parameter  can be given more than once. Each server starts
176              with a fresh set of default configuration  options,  no  inheri‐
177              tance  takes  place  from  the  previous server definition. Only
178              options explicitly marked "server-specific" can be set on a  per
179              server  basis,  "general" options are set for all servers at the
180              same time.
181
182       expire = 5
183              "expire" is the number of days an article should be kept around.
184              In  the example, five days after the article has last been read,
185              it is deleted by texpire (8). This value MUST  be  at  least  1.
186              This  parameter is global, see the introductory paragraph of the
187              following GENERAL OPTION PARAMETERS section  to  find  out  what
188              this means.
189
190       GENERAL OPTIONAL PARAMETERS
191
192       These  options  can  only be configured once in the configuration file,
193       and take effect for leafnode as a whole. It does not matter where these
194       are  specified  relative  to  server= options, but for clarity, you are
195       encouraged to place these before the  first  server=  line.  Specifying
196       each  of  the  global  options  more  than once lets the last copy take
197       effect, but may cause errors in the future.
198
199       hostname = host.domain.country
200              By default, leafnode tries hard to figure the host name of  your
201              computer, skipping inadequate (non-unique) names if possible. It
202              will look up your computer's host name with  gethostname(3)  and
203              then try to qualify the name with gethostbyname(3) if necessary.
204              Common sources for the full name therefore are  /etc/hosts,  NIS
205              and DNS, but consult your system documentation for details.
206
207              If  leafnode fails to determine the host name, this is usually a
208              hint that your system is not configured properly, or  it  has  a
209              hostname that is unsuitable for the domain part of a Message-ID,
210              for example, "localhost.localdomain", and  you  should  fix  the
211              name service configuration. Adding a unique fully-qualified host
212              name to /etc/hosts is usually sufficient. Please see README-FQDN
213              for more details.
214
215              You  can  configure the unique fully-qualified host name here as
216              well, but this is not recommended and discouraged.
217
218       create_all_links = 1
219              Normally, fetchnews will store articles only in  the  newsgroups
220              which  it considers interesting. With this option set, fetchnews
221              will create hardlinks for  all  newsgroups  in  the  Newsgroups:
222              header  that it knows about. This may be of interest if you want
223              to apply a score- or killfile to the local Xref: line.
224
225       maxfetch = 1000
226              "maxfetch" specifies the maximum number  of  articles  fetchnews
227              (8) should fetch from the upstream server in each group. Its use
228              is not advised, because if you use it you will not see  all  the
229              traffic in a group. By default there is no limit.
230
231       initialfetch = 1
232              "initialfetch" defines how many articles from a newly subscribed
233              group should be fetched. The default is to fetch all  old  arti‐
234              cles,  which  can get quite time-consuming when subscribing to a
235              very busy group. This is equivalent to setting  initialfetch  to
236              zero.  If  you want to get no old articles when subscribing to a
237              new group, you should set initialfetch to one, as in the example
238              above.
239
240       groupexpire very.crowded.group = 1
241
242       groupexpire very.crowded.hierarchy.* = 1
243              "groupexpire" makes it possible to adjust expiry times for indi‐
244              vidual groups. Expiry times are given in days. 0 means "use  the
245              default",  negative  values  prevent the expire process for this
246              group altogether (you can consider this an archive  mode).  This
247              value  is  used by texpire (8). You can specify as many groupex‐
248              pire lines as you like. It is possible to specify glob  (7)-like
249              wildcard expressions.
250
251       maxage = 10
252              If  an  article  turns  up on your upstream news server which is
253              older than "maxage" days it will not been fetched  even  if  you
254              don't  have it yet.  This is useful if your upstream server gets
255              occasional "hiccups". The default is set to 10. If you  want  to
256              switch  this  feature  off, set maxage to some very large value,
257              such as 20000 (this is equivalent to roughly 54 years).
258
259       maxold = 10
260              Is synonymous to maxage, see above.
261
262       maxlines = 2000
263              If you want to avoid receiving very large articles, you may  set
264              the "maxlines" parameter to the maximal number of lines an arti‐
265              cle should have. By default, this feature is switched off.
266
267       minlines = 2
268              Sometimes newsgroups are spammed with empty postings. To  reject
269              these  postings,  you  can set the "minlines" parameter. Setting
270              minlines to a value larger 4 is probably not a good  idea  since
271              you  will  also  start to kill "real" postings then. By default,
272              this feature is switched off.
273
274       maxbytes = 100000
275              If you want to avoid receiving very large articles,  instead  of
276              using  the  "maxlines" parameter you can also use the "maxbytes"
277              parameter. By default, this feature is switched off.
278
279       maxcrosspost = 5
280              If you want to combat spam, you can filter out all postings that
281              are posted to more than a certain number of newsgroups. The num‐
282              ber is defined by setting "maxcrosspost". Setting this parameter
283              to  very  low  values  is  probably  a bad idea. This feature is
284              switched off by default.
285
286       maxgroups = 5
287              Synonymous for maxcrosspost. See above.
288
289       filterfile = /etc/leafnode/filters
290              Leafnode can filter the  input  headers  for  arbitrary  regular
291              expressions.   These  are  stored  in a file designated "filter‐
292              file". The format of "filterfile" is very simple: one  perl-com‐
293              patible  regular  expression  per  line.  If  one of the regular
294              expressions fits to a header to be downloaded, the body of  that
295              article  will  be  rejected.  This  feature  is  switched off by
296              default. The format of the regular expressions is  described  in
297              pcre(3).
298
299       timeout_short = 2
300              By  default, a group that has been accidentally touched is being
301              fetched for two days. You can change this time by changing time‐
302              out_short.
303
304       timeout_long = 7
305              By  default,  a  group  that  has  not been read at all is being
306              fetched for seven days before being unsubscribed. This  interval
307              can be changed by setting timeout_long to a different value.
308
309       timeout_active = 90
310              By  default,  active files from the upstream servers are re-read
311              every 90 days. This interval can be  changed  by  setting  time‐
312              out_active to a different value. Be aware that reading an active
313              file transfers about one MB of information if  the  server  that
314              you  are  using  carries  a  reasonable  number of groups (i. e.
315              around 20,000).
316
317       timeout_client = 900 (since v1.9.23)
318              By default, leafnode will drop the connection  900  seconds  (15
319              minutes)  after seeing the last command from the client. You can
320              change the timeout here. Setting it too low (like below  5  min‐
321              utes)  will  annoy  your users and consume more system resources
322              for re-reading all the files.
323
324       timeout_fetchnews = 300 (since v1.9.52)
325              Fetchnews will, since v1.9.52, assume the  upstream  server  has
326              become wedged after waiting for a reply for 300 seconds. You can
327              change the timeout here.
328
329       timeout_lock = 5 (since v1.9.54)
330              Configure how many seconds the leafnode  programs  (applyfilter,
331              checkgroups,  fetchnews,  texpire)  will  wait for the lock file
332              before aborting. Setting this to 0 means to  wait  indefinitely.
333              NOTE:  you can override this by setting the environment variable
334              LN_LOCK_TIMEOUT (note it is not LN_TIMEOUT_LOCK).   The  default
335              is 5 seconds.
336
337       delaybody = 1
338              With  this option set, fetchnews (8) fetches only the headers of
339              an article for visual inspection. Only  when  the  headers  have
340              been read, the bodies of the articles will be retrieved the next
341              time fetchnews (8) is called. This can save  a  huge  amount  of
342              download time and disk space.
343
344       delaybody_in_situ = 1 (since v1.9.41)
345              This is only applicable with delaybody=1.
346
347              By default, leafnode will give the full downloaded article a new
348              article number so they appear as new in  your  newsreader.  This
349              does  not work for all newsreaders. With this option set, leafn‐
350              ode will retain the original article number. You'll have to fig‐
351              ure  out  how to tell your newsreader to show old articles. This
352              option defaults to 0. It  is  highly  recommended  to  leave  it
353              unset.
354
355
356       debugmode = 1
357              With  this  option  set, fetchnews (8), texpire (8) and leafnode
358              (8) will start to log lots of debugging output via syslog (8) at
359              facility news and priority debug. Use it for tracking down prob‐
360              lems with your feed. debugmode should be left at 0  for  regular
361              use  because it can log enormous amounts of data. The higher the
362              number, the more will be logged. Choosing a figure greater  than
363              3 will not make a difference at the moment.
364
365       allow_8bit_headers = 1 (since v1.9.25)
366              By default, leafnode rejects local posts that have 8-bit charac‐
367              ters in their headers, because they violate relevant  standards,
368              particularly  RFC-2822 (which RFC-1036 is based on) that demands
369              that Usenet news headers (as mail headers) must  be  pure  7-bit
370              US-ASCII,  with only whitespace allowed from the control charac‐
371              ters.
372
373              However, as UTF-8 is to come,  and  some  national  hierarchies,
374              particularly  the Norwegian and Danish (no.*, dk.*) seem to have
375              agreed on preferring just-send-eight over RFC-2047, you can  set
376              this  option  to allow 8-bit data in headers. Leafnode will how‐
377              ever add a warning header if 8-bit data is present, stating that
378              the site administrator allowed this.
379
380              There  is  no way to make leafnode accept non-whitespace control
381              characters in headers.
382
383       allowSTRANGERS = MAGIC (since v1.9.23)
384              By default, leafnode refuses connections from outside your LANs.
385              Check  config.example  for  how  to  use  this  parameter to let
386              strangers connect to your leafnode. Instead of MAGIC,  you  have
387              to write a number as mentioned in config.example. Note that cap‐
388              italization matters.
389
390       linebuffer = 1
391              By default, stdout and sometimes stderr of applications are  set
392              to  "fully  buffered"  unless  connected  to terminals. Use this
393              option to explicitly request line buffered mode for  stdout  and
394              stderr.
395
396       clamp_maxage = 0
397              By  default,  leafnode  will derive a "maxage" argument from the
398              expire time that is applicable to the group (groupexpire if set,
399              expire  otherwise), to prevent fetching articles again that were
400              once there and then cleared by texpire(8). Set clamp_maxage=0 to
401              get rid of this behaviour.
402
403       article_despite_filter = 1 (since v1.9.33)
404              By default, fetchnews will request HEAD and BODY separately if a
405              filter file is defined and delaybody is off. For  high  latency,
406              high  throughput  links  (such  as  interleaved DSL or satellite
407              links), it may be faster to request head and body together  with
408              an  ARTICLE  command  and  ignore  the body if the filters apply
409              (though it may not be cheaper if you pay  per  MByte),  enabling
410              this  option  will  force leafnode to use the ARTICLE command in
411              spite of filters being defined. (Note that  in  delaybody  mode,
412              HEAD and BODY will ALWAYS be requested separately.)
413
414       newsadmin = news@leafnode.example.org (since v1.9.47)
415              This  option sets the From: address for the placeholder article,
416              it should be the news administrator's mail address.  It defaults
417              to news@HOSTNAME, where HOSTNAME is leafnode's hostname.
418
419       SERVER-SPECIFIC OPTIONAL PARAMETERS
420
421       These  options  can only be placed after the server= line of the server
422       to which you would like these to apply, and they always pertain to  the
423       preceding  server=  line. Specifying them before the first server= line
424       is an error.
425
426       username = myname
427              If any of your news servers requires authentification,  you  can
428              enter  your  username  on that server here. This field may occur
429              multiple times, once  after  each  server  definition.  See  the
430              introduction  of  this  CONFIGURATION section for information on
431              how to quote myname.
432
433       password = mypassword
434              If any of your news servers requires authentification,  you  can
435              enter  your  password  on that server here. This field may occur
436              multiple times, once after each server  definition.   Since  the
437              password  is available in clear text, it is recommended that you
438              set the rights on the config file as  restrictive  as  possible,
439              otherwise  other users of your computer will be able to get your
440              password(s) from that file. See the introduction of this CONFIG‐
441              URATION section for information on how to quote mypassword.
442
443       port = 8000
444              By  default,  fetchnews  tries  to  connect to its upstream news
445              servers on the NNTP port (119). If your servers run on a differ‐
446              ent  port, you can specify those here. This field may occur mul‐
447              tiple times, once after each server definition.
448
449              Note: to modify the port your own leafnode servers  listens  on,
450              change  the  inetd.conf,  xinetd.conf  configuration file or the
451              tcpsvd/tcpserver command line. leafnode does not set up its lis‐
452              ten port itself.
453
454       timeout = 30
455              By default, leafnode tries to connect for 10 seconds to a server
456              and then gives up. If you have a slow server, you can try for  a
457              longer  time  by setting the timeout higher (in this example, 30
458              seconds). The timeout can be tuned individually for each server.
459
460       noactive = ANYTHING (v1.9.25 ... v1.11.4)
461
462       noactive = 1 (since v1.11.5)
463              If this parameter is set, the active file  is  never  downloaded
464              from  this  server.  Use  this for very slow servers unless they
465              carry groups that other servers don't offer.  Leafnode  versions
466              1.9.25 to 1.11.4 would always assume that "ANYTHING" had been 1.
467              "noactive = 0" is supported since v1.11.5.
468
469       nodesc = ANYTHING (until v1.11.4)
470
471       nodesc = 1 (since v1.11.5)
472              Some servers do not deliver news groups  descriptions  correctly
473              because  they  cannot parse the XGTITLE and LIST NEWSGROUPS com‐
474              mands. In that case, put this  line  after  the  "server"  line.
475              Leafnode  versions  up to v1.11.4 would always assume that "ANY‐
476              THING" had been 1. "nodesc = 0" is supported since v1.11.5.
477
478       nopost = 1 (since v1.9.23)
479              Prevent posting to this server. You can use this if the upstream
480              won't  let  you post but still greet leafnode with 200 or if the
481              upstream doesn't forward your postings reliably.
482
483       noread = 1 (since v1.9.33)
484              Prevent fetching news articles or active files from this server.
485              You  can  use this if the upstream is good to post, but too slow
486              to fetch news from.
487
488       noxover = 1 (since v1.9.47)
489              Prevent the use of XOVER on the current server.  Fetchnews  will
490              use XHDR instead.
491
492       only_groups_match_all = 1 (since v1.9.52)
493              Usually,  when cross-posting an article, fetchnews will post the
494              article if ANY group listed in the Newsgroups: header is matched
495              by  the  PCRE.   With  this  option on, ALL groups listed in the
496              Newsgroups: header must match. This can be used to  avoid  "poi‐
497              son" groups when you have multiple upstream servers.
498
499       only_groups_pcre = PCRE (since v1.9.28)
500              This  parameter  lists the Perl-compatible regular expression of
501              groups that are fetched or posted to this server.  The  PCRE  is
502              automatically  anchored  at  the left hand side, so you can omit
503              the leading ^. Remember to escape dots, as in:
504              de\.comp\.|de\.comm\.
505
506              If this parameter is omitted, all groups are  fetched  from  and
507              posted to this server.
508
509              Note:  you must run fetchnews with the -f option after changing,
510              adding or removing any only_groups_pcre option.
511
512              Hint:  you  can  use  something  like   this   to   check   your
513              only_groups_pcre settings:
514              cut -f1 -d" " @spooldir@/leaf.node/groupinfo \
515              | pcregrep 'PATTERN'
516
517       post_anygroup = 1 (since v1.9.37)
518              This parameter makes leafnode post on this server without check‐
519              ing if it carries the group an article is posted to. The default
520              is  post_anygroup = 0, which means that leafnode will check with
521              a "GROUP" command if the server carries the group  the  articles
522              is  posted  into. Use this on post-only servers that don't allow
523              the "GROUP" command. Note: inconsiderate use of  this  parameter
524              may cause articles to end up in the failed.postings directory.
525
526       OBSOLETE PARAMETERS
527
528       supplement
529              is synonymous to server. Don't use it on new installations.
530
531       fqdn   is synonymous to hostname. Don't use it on new installations.
532
533

PROTOCOL

535       Here are the NNTP commands supported by this server:
536
537       ARTICLE,  BODY,  DATE, GROUP, HDR, HEAD, HELP, LAST, LIST, LIST ACTIVE,
538       LIST ACTIVE.TIMES, LIST EXTENSIONS, LIST NEWSGROUPS, LIST OVERVIEW.FMT,
539       LISTGROUP, MODE, NEWGROUPS, NEXT, POST, OVER, SLAVE, STAT, XHDR, XOVER.
540       These commands follow RFC-977 and RFC-2980, except HDR and  OVER  which
541       are recognized in anticipation of current NNTP drafts.
542
543       Note that the syntax of HDR and OVER may change.
544

BUGS

546       Leafnode  is  totally  unaware  of  UTF-8 and will reject a client that
547       posts UTF-8 characters in the header. Current Usefor drafts  claim  all
548       article  headers UTF-8 encoded Unicode. Leafnode still expects RFC-2047
549       instead which may eventually be phased out in favour of UTF-8.
550
551       Leafnode stops reading a line at the first NUL character.
552
553       Leafnode may not cope well with crosspostings that cross hierarchies if
554       you  have multiple upstream feeds and use the only_groups_pcre configu‐
555       ration option.
556
557       Leafnode will only bother to determine the time zone offset for  gener‐
558       ated  Date:  headers for posts that lack them on systems that offer the
559       tm_gmtoff member in struct tm (commonly BSD and GNU systems).
560
561

AUTHOR

563       Written by Arnt Gulbrandsen <agulbra@troll.no> and copyright 1995 Troll
564       Tech AS, Postboks 6133 Etterstad, 0602 Oslo, Norway, fax +47 22646949.
565
566       Modified  by  Cornelius  Krasel  <krasel@wpxx02.toxi.uni-wuerzburg.de>,
567       Randolf   Skerka   <Randolf.Skerka@gmx.de>   and   Markus   Enzenberger
568       <enz@cip.physik.uni-muenchen.de>.    Copyright   of  the  modifications
569       1997-1999.
570
571       Modified by Matthias Andree <matthias.andree@gmx.de>, Copyright 1999  -
572       2002.   Modified by Ralf Wildenhues <ralf.wildenhues@gmx.de>, Copyright
573       2002.
574
575       Jonathan Larmour <jifl@jifvik.org> contributed the timeout_client  fea‐
576       ture.
577
578       Andreas  Meininger  <a.meininger@gmx.net>  contributed  the code to let
579       texpire ignore groupexpire = -1 groups.
580
581       Mark Brown <broonie@debian.org> added the noactive option.
582
583       Numerous contributions by other people.
584
585       The initial development of leafnode has been paid  for  by  Uninett  AS
586       (http://www.uninett.no/).
587
588

SEE ALSO

590       applyfilter(8), checkgroups(8), fetchnews(8), newsq(1), texpire(8).
591
592       tcpd(8), hosts_access(5), glob(7), pcre(3), RFC 977, RFC 2980.
593
594
595
596leafnode                            1.11.5                         leafnode(8)
Impressum