map-storage

Look for changes in the file CHANGES.

The map-storage is included in the map-regex distribution.

How to install

copy map_storage to sendmail-?.?.?/src.
Apply the conf.c.patch

Edit your Makefile in sendmail-8.8.?/src/Makefiles/

DBMDEF= -DMAP_STORAGE ...

# additional .o files needed
OBJADD=map_storage.o ...

./makesendmail (if it does not work "rm -r src/obj*")
Test: ./sendmail -d73 -bt -Ctest_sendmail.cf
Send bug-reports to: Jan.Krueger+map@stud.uni-hannover.de

How does it work

It knows the following options in K-Line:

-sSIZE size in characters (default 100)
-hHEADER add a header-field named HEADER with the content of the storage. This is logged to syslog. If the storage is empty, no field is added.

It knows the following options in lookup ($@):

b convert IP to binary "number"
c clear the storage
l lookup (not needed, default)

Examples

Define a map-storage:

Kfriend storage STARTUP_VALUE

Store a value:

...
R$*		$: $(spam_friends $1 $)
R$*@SPAMFRIEND	$: $(friend YES $)
...

Lookup a value:

...
R$*	$: $(friend $)
RYES	$@ is_friend
...

Clear the storage

...
R$*	$: $(friend $@ c $)
...

Match local subnets:

# file containing IPs in "binary" format @ = 1, . = 0
# e.g. 130.75.128.0/255.255.128.0 = @.....@..@..@.@@@
F{localsubnets}/etc/mail/localsubnets

Kip2bin storage

...
R$*			$: $(ip2bin $&{client_addr} $@ b $)
R$={localsubnets}$* 	$@ ok_is_local
...

Add a header-field

Kspam_head -hX-Spam-Header

...
R@JUNK		$: $(spam_head is_junk $)
...

Add no header-field, if it's no spam

Kspam_head -hX-Spam-Header is_junk

...
R$*		$@ $(spam_head $@ c $)

Jan Krüger, Jan.Krueger+map@stud.uni-hannover.de