[CTX] [ALL] NNTP proxy/server

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NNTP proxy/server

MOUNT can be applied to NNTP-DeleGate, for filtering and aliasing of newsgroups, and for merging multiple NNTP severs. For example, MOUNT="alias-group. nntp://server/group." specifies to passing newsgroups "group.*" and aliases them into "alias-group.*". A simple filtering specification is SERVER="nntp://server/group." which is equivalent to MOUNT="= nntp://server/group.". If multiple MOUNT for multiple NNTP servers, then the DeleGate merges the newsgroups on the servers, and serves the newsgroups to a client as if they are on a single server.

Example: Filtering

# delegated -P119 SERVER=nntp://nntpServer/group.

relays only newsgroups which have name pattern "group.*". A list of groups can be specified for a nntpServer like "nntp://nntpServer/group1.,group2.,..."

Example: merge multiple NNTP servers

# delegated -P119 SERVER=nntp \


MOUNT="= nntp://server1/"
MOUNT="= nntp://server2/"

Example: merge multiple NNTP servers with authentication (by AUTHINFO)

# delegated -P119 SERVER=nntp \


MOUNT="= nntp://user1:pass1@server1/"
MOUNT="= nntp://user2:pass2@server2/"

Example: mount selected group(s)

// mounts groups of group.* with it original names.
MOUNT="= nntp://server1/group."
// mounts groups of group.* with aliased names "alias-group.*"
MOUNT="alias-group. nntp://server1/group."

Example: POP server to NNTP client

// mounts a mail spool as if it is a newsgroup named "+pop.user.host".
# delegated -P119 SERVER=nntp MOUNT="= pop://user:pass@host/"

Example: NNTP server to HTTP client

# delegated -P80 MOUNT="/news/* nntp://nntpServer/*"

Example: origin NNTP-DeleGate

# delegated -P119 SERVER=nntp://-.-/

Specifying "-.-" as the destination server in SERVER parameter of NNTP-DeleGate means using the DeleGate as an origin NNTP server which has its own spools to be retrieved and posted. To make a new newsgroup named newsGroup, make an empty file

'${ETCDIR}/news/groups/newsGroup'
To relay an existing "/path/of/MH-folder" as newsGroup, make a file like above and fill it with content like
0 0 0 0 /path/of/MH-folder
(four zeros followed by a path name of a MH-folder)

When a posted article has Unix-From like "From user date" as the first line or has a "Unix-From: user date" header, the article number for the article is set to the one indicated in "X-Seqno" (or "X-Sequence") header if exists, and the creation date of the spool file will be set to the date in the Unix-From.

Anonymizing NNTP articles

To disable mail address mining for spamming, mail addresses transferred over NNTP protocol can be anonymized with the "rewaddr" MountOption as this:

MOUNT="* nntp://server/* rewaddr=*:%l@%r"
This "rewaddr" MountOption can be used in MOUNT parameter both for NNTP and HTTP DeleGate. To suppress the rewriting of mail addresses for specific addresses or domains, specify "nomapemail" option of NNTPCONF like this:
NNTPCONF="nomapemail:{etl.go.jp,feedback@delegate.org,services@}"

Anonymization can be controlled by the poster of each article via a NNTP/HTTP gateway DeleGate. For example, a DeleGate server for NNTP/HTTP gateway can be configured like this:
SERVER=http -P8080 MOUNT="/ml/* nntp://server/mail-lists.*" ...

The anonymization of each article, or articles posted by a poster, is controlled in the page at:

http://DeleGate:8080/ml/groupName/articleNumber?Admin
An authentication key for each poster is required to control anonymization. The key can be sent automatically via mail, or got with "-Fauthkey" command:
delegated -Fauthkey foo@bar.dom
Each key is encrypted with a passphrase, of which default value is an empty string. It should be changed to a non-default value with the AUTH=pass parameter for each DeleGate server or -Fauthkey command:
delegated AUTH="pass:admin:creysalt:PassPhrase" SERVER=nntp ...
delegated AUTH="pass:admin:creysalt:PassPhrase" SERVER=http ...
delegated AUTH="pass:admin:creysalt:PassPhrase" -Fauthkey ...

This anonymization can be applied as an off-line filter command too:
delegated MIMECONV="rewaddr:*:%l@%r" -FdeMime < infile > outfile
If necessary, MIMECONV="nomapemail:{listOfAddress}" and AUTH=pass:admin:... can be used with -FdeMime.

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