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Hi Josel,

How much is "a lot"?
Because imho, spam these days are becoming smarter and smarter.
In my simple spamassassin setup which is just using auto-update sare
rules, approximately 15K to 20K of spam mails are already being dropped
on a monthly basis, although imho it's already a decent number, but
still a lot of spam are getting through (using the animated gif technique).

My point here is, you have to first monitor your anti-spam solution to
have an idea on the ratio of it's effectiveness. And also, you are using
postix's native anti-UCE technique, are you also using 3rd party
solution like spamassassin or dspam?



hth,

Kenneth
- --
PGP Public Key: http://m.1asphost.com/koncinian/koncinian.gnupg.key


Josel Joaquin wrote:
> 
> Kindly see below the Anti-UCE config in my Postfix main.cf
> <http://main.cf> config settings, it is blocking some emails but
> unfortunately lots of spam are getting through. Is there a way to make
> it more effective? Thanks.
> 
> smtpd_sender_restrictions =
>         check_sender_access hash:/etc/postfix/access,
>         permit_mynetworks,
>         reject_rhsbl_sender rhsbl.sorbs.net <http://rhsbl.sorbs.net>,
>         reject_rhsbl_sender sbl-xbl.spamhaus.org
> <http://sbl-xbl.spamhaus.org>,
>         reject_rhsbl_sender blackhole.securitysage.com
> <http://blackhole.securitysage.com>,
>         reject_maps_rbl
>         reject_non_fqdn_sender,
>         reject_unknown_sender_domain,
>         reject_rhsbl_sender dsn.rfc-ignorant.org
> <http://dsn.rfc-ignorant.org>,
>         permit
> smtpd_recipient_restrictions =
>         reject_unlisted_recipient
>         check_client_access hash:/etc/postfix/access
>         permit_mynetworks
>         permit_mx_backup
>         reject_rhsbl_client block.blars.org <http://block.blars.org>,
>         reject_rhsbl_sender blackhole.securitysage.com
> <http://blackhole.securitysage.com>,
>         reject_maps_rbl
>         reject_unauth_destination
>         check_sender_access hash:/etc/postfix/sender_access
>         check_policy_service unix:private/policy
> 
> 
> ------------------------------------------------------------------------
> 
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