Mail tranmission issue: Postfix/Sendmail

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mail::milter::chain

Mail::Milter::Chain(3pm)				User Contributed Perl Documentation				  Mail::Milter::Chain(3pm)

NAME

       Mail::Milter::Chain - Perl extension for chaining milter callbacks

SYNOPSIS

	   use Mail::Milter::Chain;

	   my $chain = new Mail::Milter::Chain({ connect => &foo, ... }, ...);
	   $chain->register({ connect => &bar, ... });
	   $chain->register({ connect => &baz, ... });

	   $chain->accept_break(1);

	   use Sendmail::Milter;
	   ...
	   Sendmail::Milter::register('foo', $chain, SMFI_CURR_ACTS);

DESCRIPTION

       Mail::Milter::Chain allows multiple milter callback sets to be registered in a single milter server instance, simulating multiple milters
       running in separate servers.  This is typically much less resource intensive than running each milter in its own server process.

       Any contained milter returning SMFIS_REJECT, SMFIS_TEMPFAIL, or SMFIS_DISCARD will terminate the entire chain and return the respective
       code up to the containing chain or milter server.

       Normally, a milter returning SMFIS_ACCEPT will remove only that milter from the chain, allowing others to continue processing the message.
       Alternatively, SMFIS_ACCEPT can be made to terminate the entire chain as is done for error results; see "accept_break()" below.

       A "Mail::Milter::Chain" is itself a milter callback hash reference, and can thus be passed directly to "Sendmail::Milter::register()" or
       another Mail::Milter::Chain container.  IMPORTANT CAVEAT:  Once this object has been registered with a parent container (a milter or
       another chain), DO NOT call "register()" on this object any longer.  This will result in difficult to diagnose problems at callback time.

METHODS

       new([HASHREF, ...])
	   Creates a Mail::Milter::Chain object.  For convenience, accepts one or more hash references corresponding to individual callback sets
	   that will be registered with this chain.

       accept_break(FLAG)
	   If FLAG is 0 (the default), SMFIS_ACCEPT will only remove the current milter from the list of callbacks, thus simulating a completely
	   independent milter server.

	   If FLAG is 1, SMFIS_ACCEPT will terminate the entire chain and propagate SMFIS_ACCEPT up to the parent chain or milter server.  This
	   allows a milter to provide a sort of "whitelist" effect, where SMFIS_ACCEPT speaks for the entire chain rather than just one milter
	   callback set.

	   This method returns a reference to the object itself, allowing this method call to be chained.

       register(HASHREF)
	   Registers a callback set with this chain.  Do not call after this chain has itself been registered with a parent container (chain or
	   milter server).

AUTHOR

       Todd Vierling, <tv@duh.org> <tv@pobox.com>

SEE ALSO

       Mail::Milter, Sendmail::Milter

perl v5.8.8							    2004-02-26						  Mail::Milter::Chain(3pm)

UNIX for Dummies Questions & Answers