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= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
configset  GLOBAL  block_headers <<TAG
[VALUE LINES]
TAG
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Default Value : /X-Loop:.*majordomo/i ... (only first item is shown)
Data Type     : taboo_headers
Category      : access
Password Notes: Visible only with password. 
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

EXAMPLE:
configset GLOBAL block_headers <<ENDTAG
/^X-Loop/i
/^subject:\s*spam\b/i
ENDTAG

If any of the headers in a message sent to the Majordomo server address
matches one of these patterns, the message will be discarded instead of
being parsed for commands.

This setting affects messages sent to any command address, including 
the main server address (majordomo@openbsd.org) and
any LIST-request, LIST-subscribe, or other command-related address that
is supported at this site.  See "help configset_aliases" for a
description of other addresses that will cause commands to be processed.

By default, Majordomo will add an "X-Loop: majordomo" header to all
messages sent by the server in response to commands.  The block_headers
setting contains a pattern that will match "X-Loop" headers, to prevent
mail loops between two Majordomo server addresses.  

See "help configset_message_headers" for an explanation of how the "X-Loop" 
and other headers are added to e-mail messages.

By default, any match generated by the block_headers setting will cause
the message to be discarded without sending a reply to the person who
sent the message.  A notice will be mailed to the domain administrators
if they have chosen to be informed of "connect" events.  See 
"help configset_inform" for more information about these notices.

The score and variable name features of other pattern-matching settings
are also available for the block_headers setting.  For example, the 
following pattern:

  /From:.*big@example.com/ 5,example

would cause 5 to be added to the "block_example" access variable for
each header in a message that matches the pattern.  See 
"help configset_admin_body" for more examples of the score and variable
features.  If the variable name consists of all capital letters, by
default nothing will happen.

It is possible to send a reply message to the person whose message was
blocked, using the "mailfile" action in the access_rules setting.  See
"help configset_access_rules" and "help access" for more details.


See Also:
   help access
   help admin_domain
   help configset_access_rules
   help configset_admin_body
   help configset_admin_headers
   help configset_aliases
   help configset_message_headers
   help configset_noarchive_body
   help configset_noarchive_headers
   help configset_taboo_body
   help configset_taboo_headers

This is the "configset_block_headers" help document for 
Majordomo 2, version 0.1201103110.

For a list of all help documents, send the following command:
   help topics
in the body of a message to majordomo@openbsd.org.

For assistance, please contact the openbsd.org administrators.

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