{Spam?} RE: Alias rule help

[Nasser Al-Zawawi]

Hi Martin,
Could you translate your suggestion into instructions, something like
add this line (a.b.c) to file /x/y/z.conf as I am not too proficient in
email lingo?

Best regards,

Nasser Al-Zawawi
ALZ, Inc.
http://www.alz-inc.com/
Phone: 313 887-9345
Fax: 888 467-1853

-----Original Message-----
From: mailscanner-bounces at lists.mailscanner.info
[mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Martin
Hepworth
Sent: Monday, December 15, 2008 12:45 PM
To: MailScanner discussion
Subject: Re: Alias rule help

2008/12/15 Nasser Al-Zawawi <nassera at alz-inc.com>:
> Hi,
>
> I have a RedHat ES 4 server running sendmail (8.13.1) and I am using
the
> latest MailScanner version (4.73.4-2), ClamAV 0.94.2 and SpamAssassin
> 3.2.5.  I need help with a rule that should block all outside users
from
> sending emails to our aliases and only allow them to come from people
from
> our domain.  For example we have an alias called _all_users_ and it is
> literally all users on the system.  Somehow spammers are able to see
these
> aliases on the system (I hope there is a way to disallow them from
seeing
> the aliases) and then they are sending SPAMs to these aliases so when
they
> send a spam to _all_users_ at domain.com everybody gets that spam.  Could
> somebody write this rule and show what directive to put in the
> MailScanner.conf if any.  I have tried a few but none worked.
>
>
>
>
>
> Best regards,
>
> Nasser
>
>
>
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>
>


Nasser

I'd do this at the MTA level. Put in a check for 'valid' users, You'll
more than likely also need to split the emails into single recipients
so emails to fred at domain & all_users at domain don't go through due the
to envelope recipient being fred at domain.

-- 
Martin Hepworth
Oxford, UK
-- 
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