header L_P0F_OS_WINDOWSXP   X-Amavis-OS-Fingerprint =~ /^Windows XP/
score  L_P0F_OS_WINDOWSXP   3.5
header L_P0F_OS_WINDOWS_OTHER X-Amavis-OS-Fingerprint =~ /^Windows(?! XP)/
score  L_P0F_OS_WINDOWS_OTHER 1.7
header L_P0F_OS_UNKOWN  X-Amavis-OS-Fingerprint =~ /^UNKNOWN/
score  L_P0F_OS_UNKOWN  0.8
header L_P0F_OS_LINUX  X-Amavis-OS-Fingerprint =~ /^Linux/
score  L_P0F_OS_LINUX  -0.3
header L_P0F_OS_UNIX  X-Amavis-OS-Fingerprint =~ /^((Free|Open|Net)BSD)|Solaris|HP-UX|Tru64/
score  L_P0F_OS_UNIX  -1.0

header L_P0F_D_1_4 X-Amavis-OS-Fingerprint =~ /\bdistance [1-4](?![0-9])/
header L_P0F_D_5_6 X-Amavis-OS-Fingerprint =~ /\bdistance [5-6](?![0-9])/
header L_P0F_D_7_9 X-Amavis-OS-Fingerprint =~ /\bdistance [7-9](?![0-9])/
header L_P0F_D_15_25 X-Amavis-OS-Fingerprint =~ /\bdistance [15-25](?![0-9])/

score  L_P0F_D_1_4 -0.7
score  L_P0F_D_5_6 -0.5
score  L_P0F_D_7_9 -0.3
score  L_P0F_D_15_25 0.3