You are reading the file one line at a time so your regular expression will not work.

This should work: 


while ( my $mls = <IN> ) {
    push @res, $mls if $mls =~ /^message=/ .. $mls =~ /^Message Id/;
}

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In reply to Re: Multiple Line Regex Not Working by jwkrahn
in thread Multiple Line Regex Not Working by ImJustAFriend

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