On 6/21/10 7:41 PM, Alex wrote:
Hi,
by default, our appliances don't do outbound spam scanning (they scan for
virus, banned attachments). they have to enable outbound scanning, which has
more relaxed rules.
My understanding is that the only way to avoid this, at least when
amavisd and postfix, is to create another instance and modifying the
in amavisd, set this in policy bank: (obviously triggered on mynetworks
ip.s you could also trigger on auth)
$policy_bank{'MYNETS'} = { # mail originating from @mynetworks
originating => 1,
# virus_name_to_spam_score_maps => undef,
bypass_spam_checks_maps => 1,
etc.
Or, if they enable outbound content filtering, we turn it on.
Do you mean after the point of purchase, once it's installed on their network?
yes, client has option to enable outbound content filtering, and turn on
outbound spam scanning.
For hosted clients, we make the VAR's get their clients to sign a special
agreement before we even let them send outbound. and they have to pay extra
for spam/content filtering.
So how would they otherwise send email, using their own ISPs servers?
Most of our VARS sell B2B, SMB, enterprise, etc. those clients already
have their own mail servers. In fact, only about 10% of the total user
count does outbound. Also, on the appliance side, many clients still
use their mail servers to send out directly. In the appliance side, its
a little higher, especially the clients who want to enforce TLS encryption.
The ISP's already have in place email servers and purchase a couple
appliances.
The rules are not THAT strict, but do reflect the policies and AOP of
our access providers.
It would be very bad if client a spammed, and got the outbound ip shared
with client b,c,d,e,f,g blacklisted.
--
Michael Scheidell, CTO
Phone: 561-999-5000, x 1259
> *| *SECNAP Network Security Corporation
* Certified SNORT Integrator
* 2008-9 Hot Company Award Winner, World Executive Alliance
* Five-Star Partner Program 2009, VARBusiness
* Best Anti-Spam Product 2008, Network Products Guide
* King of Spam Filters, SC Magazine 2008
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