Re: Spamassassin, greylist, and sendmail

----- Original Message ----- From: "Steven Stern" <subscribed-lists@xxxxxxxxxxxxx>
To: <users@xxxxxxxxxxxxxxxxxxxxxxx>; <fedora-list@xxxxxxxxxx>
Sent: Saturday, December 18, 2004 11:16 AM
Subject: Spamassassin, greylist, and sendmail

I'm trying greylisting as a way of reducing spam.

By themselves, both milter-greylist and spamass-milter work OK.  When I
combine them, spamass-milter dies with the error "cmd read returned 0
expecting 5"

It seems that the problem is with the milter macros required by
milter-greylist. If they defines following the greylist milter are
uncommented, then I have the problem with spamass-milter.  I'musing
spamass-milter 0.2.0.

Suggestions? (Yes, I know, use MimeDefang or Amavis. But right now, I want
to see if I can solve this problem.)

dnl #
dnl #### greylist milter ###########################
dnl #
dnl #INPUT_MAIL_FILTER(`greylist',
`S=local:/var/milter-greylist/milter-greylist.sock')dnl
dnl #define(`confMILTER_MACROS_CONNECT', `j, {if_addr}')dnl
dnl #define(`confMILTER_MACROS_HELO', `{verify}, {cert_subject}')dnl
dnl #define(`confMILTER_MACROS_ENVFROM', `i, {auth_authen}')dnl
dnl #
dnl #### CLAM ######################################
dnl #
INPUT_MAIL_FILTER(`clmilter',`S=local:/var/run/clamav/clamav-milter.sock,F=,
T=S:4m;R:4m')dnl
dnl #
dnl #### SPAMASSASSIN #############################
dnl #
INPUT_MAIL_FILTER(`spamassassin', `S=local:/var/run/spamass.sock,
F=,T=C:15m;S:4m;R:4m;E:10m')dnl
dnl #
define(`confMILTER_LOG_LEVEL', 8)dnl

--
 Steve

Wanted to follow up with you.

My sendmail.mc looks like this:

INPUT_MAIL_FILTER(`greylist',`S=local:/var/milter-greylist/milter-greylist.sock')dnl
define(`confMILTER_MACROS_HELO', `{verify}, {cert_subject}')dnl
define(`confMILTER_MACROS_ENVFROM', `i, {auth_authen}')dnl

INPUT_MAIL_FILTER(`clmilter',`S=local:/var/run/clamav/clmilter.sock,F=, T=S:4m;R:4m')dnl

INPUT_MAIL_FILTER(`spamassassin', `S=local:/var/run/spamass.sock, F=, T=C:15m;S:4m;R:4m;E:10m')dnl
define(`confMILTER_MACROS_CONNECT',`b, j, _, {daemon_name}, {if_name}, {if_addr}')dnl


The reason I have mine set up in this order is because I believe (someone please correct me if I'm wrong) that it uses the least resources. First comes the greylist delay. It's a tiny little answer to the sending mail server and doesn't require any heavy lifting on my mail server. Only those messages which come from legit (hopefully) mail servers make it to the next steps which require real processing overhead (anti-virus and spam scanning).

Cheers,
Thomas