Bypass spam filters for certain mail addresses

Question

I am looking for a way to bypass virus checks on mail from a certain mail user (actually system mail sent from a process that we have, so we can trust it).
I have been playing with the @bypassspam_checksacl = qw( [email protected] ); entry in /etc/amavisd.conf but this doesn't seem to bypass as I would expect.
Does anyone know if this file might be over riden else where or perhaps if I can bypass in another way?
Cheers

Answer 1

Greetings
there is probably more than one way to skin a cat.
here is a postfix only method however i'm not sure if it will pass all before amavid. so see the snippit from the amavisd.conf below.
main.cf
smtpd_recipient_restrictions = hash:/etc/postfix/spamlovers, .....
create a file call spamlovers
[email protected] OK
biggroup.net OK
that will prevent all subsequent anti-spam checks from being applied to
the listed recipient domains/addresses. in short - they want spam, let
them eat spam.
((snip)) amavisd.conf
# %bypass_virus_checks, @bypass_virus_checks_acl and $bypass_virus_checks_re
# lookup tables:
# (this is mainly a time-saving option, unlike virus_lovers* !)
# Similar in concept to %virus_lovers, a hash %bypass_virus_checks,
# access list @bypass_virus_checks_acl and regexp list
$bypass_virus_checks_re
# are used to skip entirely the decoding, unpacking and virus checking,
# but only if ALL recipients match the lookup.
# %bypass_virus_checks/@bypass_virus_checks_acl/$bypass_virus_checks_re
# do NOT GUARANTEE the message will NOT be checked for viruses - this may
# still happen when there is more than one recipient for a message, and
# not all of them match these lookup tables. To guarantee virus delivery,
# a recipient must also match %virus_lovers/@virus_lovers_acl lookups
# (but see milter limitations above),
# NOTE: it would not be clever to base virus checks on SENDER address,
# since there are no guarantees that it is genuine. Many viruses
# and spam messages fake sender address. To achieve selective filtering
# based on the source of the mail (e.g. IP address, MTA port number, ...),
# use mechanisms provided by MTA if available.
# Similar to lookup tables controlling virus checking,
# there exist spam scanning and banned names/types control counterparts:
# %spam_lovers, @spam_lovers_acl
# %banned_files_lovers, @banned_files_lovers_acl
# and:
# %bypass_spam_checks/@bypass_spam_checks_acl/$bypass_spam_checks_re
# (but no bypass_banned_checks, as $bypass_decode_parts controls it
already)
# See README.lookups for detailsabout the syntax.
# The following example disables spam checking altogether,
# since it matches any recipient e-mail address (any address
# is a subdomain of the top-level root DNS domain):
# @bypass_spam_checks_acl = qw( . );
# See README.lookups for further detail, and examples below.
# $virus_lovers{lc("postmaster\@$mydomain")} = 1;
# $virus_lovers{lc('[email protected]')} = 1;
# $virus_lovers{lc('[email protected]')} = 1;
# $virus_lovers{lc('some.user@')} = 1; # this recipient, regardless of
domain
# $virus_lovers{lc('[email protected]')} = 0; # never, even if domain matches
# $virus_lovers{lc('example.com')} = 1; # this domain, but not its
subdomains
# $virus_lovers{lc('.example.com')}= 1; # this domain, including its
subdomains
#or:
# @virus_lovers_acl = qw( [email protected] !lab.xxx.com .xxx.com yyy.org );
# $bypass_virus_checks{lc('[email protected]')} = 1;
# @bypass_virus_checks_acl = qw( some.ddd !butnot.example.com
.example.com );
# @virus_lovers_acl = qw( [email protected] );
# $virus_lovers_re = new_RE( qr'(helpdesk|postmaster)@example\.com$'i );
# $spam_lovers{lc("postmaster\@$mydomain")} = 1;
# $spam_lovers{lc('[email protected]')} = 1;
# $spam_lovers{lc('[email protected]')} = 1;
# @spam_lovers_acl = qw( !.example.com );
# $spam_lovers_re = new_RE( qr'^user@example\.com$'i );
# don't run spam check for these RECIPIENT domains:
# @bypass_spam_checks_acl = qw( d1.com .d2.com a.d3.com );
# or the other way around (bypass check for all BUT these):
# @bypass_spam_checks_acl = qw( !d1.com !.d2.com !a.d3.com . );
# a practical application: don't check outgoing mail for spam:
# @bypass_spam_checks_acl = ( "!.$mydomain", "." );
# (a downside of which is that such mail will not count as ham in SA
bayes db)
I'm sure anyone of these methods will allow the lovers of the blessed spam to fill their hearts content. Hope you have good hard drives
--j