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The format of a procmail
recipe is:
recipe header line
condition line(s)
action line
The recipe header line defines the basic action of the recipe. All recipe lines start with the
heading:
:0 [flags] [: locallockfile]
The flags identify the basic function that the recipe will perform. Table 15.1 lists the flags
that are available.
TABLE 15.1 Recipe Flags
Flag Description
A Do not execute the recipe unless the conditions of the last preceding recipe are met.
a Do not execute the recipe unless the conditions of the immediately preceding recipe
are met.
B egrep the body of the message.
b Feed the body of the message to the destination (default).
c Generate a carbon copy of this message.
CHAPTER 15 Managing Email Servers 326
Fighting Spam and Viruses 327
D Distinguish between upper and lower case (the default is to ignore case).
E Do not execute the recipe unless the conditions of the last preceding recipe were not met.
e Do not execute the recipe unless the immediately preceding recipe failed.
f Consider the pipe as a filter.
H egrep the message header (default).


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