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<TITLE>Exim Filter Specification - Significant deliveries</TITLE>
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<H2><A NAME="SEC10" HREF="filter_toc.html#TOC10">Significant deliveries</A></H2>
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When in the course of delivery a message is processed by a filter file, what
happens next, that is, after the whole filter file has been processed, depends
on whether the filter has set up any <EM>significant deliveries</EM> or not. If
there is at least one significant delivery, then the filter is considered to
have handled the entire delivery arrangements for the current address, and no
further processing of the address takes place. If, however, no significant
deliveries have been set up, Exim continues processing the current address as
if there were no filter file, and typically sets up a delivery of a copy of the
message into a local mailbox. In particular, this happens in the special case
of a filter file containing only comments.
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The delivery commands <EM>deliver</EM>, <EM>save</EM>, and <EM>pipe</EM> are by default significant.
However, if such a command is preceded by the word <TT>`unseen'</TT>, then its
delivery is not considered to be significant. In contrast, other commands such
as <TT>`mail'</TT> and <TT>`vacation'</TT> do not count as significant deliveries unless
preceded by the word <TT>`seen'</TT>.
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