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Mail::SpamAssassin::PlUser:ContributeMail::SpamAssassin::Plugin::MIMEHeader(3)
NAME
       MIMEHeader - perform regexp tests against MIME headers
SYNOPSIS
         loadplugin    Mail::SpamAssassin::Plugin::MIMEHeader
         mimeheader    NAME_OF_RULE    Content-Id =~ /foo/
DESCRIPTION
       This plugin allows regexp rules to be written against MIME headers in
       the message.
RULE DEFINITIONS AND PRIVILEGED SETTINGS
       mimeheader NAME_OF_RULE Header-Name =~ /pattern/modifiers
           Specify a rule.  "NAME_OF_RULE" is the name of the rule to be used,
           "Header-Name" is the name of the MIME header to check, and
           "/pattern/modifiers" is the Perl regular expression to match
           against this.
           Note that in a message of multiple parts, each header will be
           checked against the pattern separately.  In other words, if
           multiple parts have a 'Content-Type' header, each header's value
           will be tested individually as a separate string.
           Header names are considered case-insensitive.
           The header values are normally cleaned up a little; for example,
           whitespace around the newline character in "folded" headers will be
           replaced with a single space.  Append ":raw" to the header name to
           retrieve the raw, undecoded value, including pristine whitespace,
           instead.
perl v5.26.3                      202Mail::SpamAssassin::Plugin::MIMEHeader(3)