If we were running a corporate mail system I would agree. However, we do
web hosting and we often have the case of someone trying to send mail from
an unauthorized location to one of our customers. With SPF the mail is
blocked and we have one of our customers yelling at us that we're keeping
them from receiving important mail. I've tried explaining that SPF reduces
the spam entering our system but they just threaten to move their business.
At 10:50 PM 9/2/2006, you wrote:
SPF might help
At 07:56 PM 9/2/2006, you wrote:
Hi Darrel:
Thanks for the rant. I can live with AOL since they send us copies of
their spam complaints. However, ISPs like Comcast, Verizon and ATT just
block our mailservers and take the position that we should be filtering
the outgoing mail from our server so they don't have to use their
resources to do it.
Our users aren't spamming. The problem seems to be spam addressed to them
that is being forwarded to their Comcast (or AOL or ATT) account. Some of
the more clueless setup global catch-alls which then forward dictionary
attack spams to their local ISP.
So we're going to do two things; first, prevent the use of global
catch-alls other than bounce, and, second, filter all email and delete
anything with a spam score over 10 whether the user has spam filtering
turned on or not.
We'd like to filter all outgoing email but it we can't do that with qmail
we'll just filter all incoming email and hope that covers it.
At 07:24 PM 9/2/2006, you wrote:
Why are they demanding that you filter outgoing mail?
If your users are sending illegitimate email it can be traced back to
the source easily enough. received from: headers and radius logs make it
pretty straight forward.
<rant>
I personally don't like the strong arm policies of some of the larger
providers. I'm tired of getting mail from [EMAIL PROTECTED], a majority of
bounces I receive from them are legitimate email lists on my mailman and
ez-mlm servers. There is nothing in place for recourse. I have to deal
with spam from the massive bot nets lurking on their networks. They can
deal with processing the mail from my minuscule user base. I think they
need to provide a better security infrastructure and educate their end
users, rather than try to pass the buck onto a smaller provider.
</rant>
On Sat, 2006-09-02 at 14:13 -0400, Jeff Koch wrote:
> Hi
>
> We are getting demands from large ISP's - Comcast, AOL, AT&T - that
we spam
> filter all outgoing email. We're using simscan to filter incoming
email but
> I think that misses email generated by our customers and autoresponders.
> Can it be accomplished by modifying /home/vpopmail/etc/tcp.smtp ?
>
> How are other qmail users handling this?
>
> Thanks in advance.
>
>
>
> Jeff Koch
>
>
>
Best Regards,
Jeff Koch, Intersessions
Ryugen C. Fisher
Palaver Consulting Group
http://www.palaver.org
*Serving our clients since 1984*
Best Regards,
Jeff Koch, Intersessions
