Hello list,

so what I'm basically interested in: Where (seen from a network point
of view) do you guys place your content filters?

It's not very hard to see that the frontend MXs in one's company
should be realized as a screened host, i.e. in a subnet separated from
the Internet and from the company's internal network. If the frontend
MX need data stored in databases (SQL, LDAP), it's advised most of the
time to dump those databases on a regular basis and copy the files to
the frontend MX.

Now, things aren't that easy with amavisd-new: While you _can_ dump
all the data carefully updated in your SQL/LDAP configuration, this is
- in most cases - a lot of work. So, the choices you have are (at
least IMHO):

1. Place the content filter in the company's internal network, where
it has access to the database backends.
2. Place the content filter in the same (or another screened) subnet
which already hosts the frontend MX. Place the database server in the
companys internal network, allow queries.
3. Place content filter and database backend in the same (or another)
screened subnet that already hosts the frontend MX (worst solution,
IMHO).
4. Place content filter and a special read-only slave of the database
in a screened subnet outside of the company's internal network, update
database mirror from inside the companys's network.

How do you guys handle that (that is, if you have at least one screened
subnet)?


Cheers
Stefan
-- 
Stefan Förster     http://www.incertum.net/     Public Key: 0xBBE2A9E9
FdI #81: Cursor-Tasten - Neumodischer Schnickschnack. (Gert Döring)

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