Henry Kwan schrieb:
Hi,
Have been running SA on CentOS for a few years now and everything has been
working great. But the powers that be want to move to Exchange so I am trying
to plan a SA frontend that feeds the Exchange server.
As I was thinking over how SA works now and how it might work in the my future
setup, I was wondering how you would feed unmarked spam to the SA frontend?
Since email is passed through to Exchange, it isn't stored on the SA server
anymore like it is now. Or would I be limited to just having SA autolearn?
Also, if anyone has some good links to setting up a SA frontend to Exchange,
that would be much appreciated.
Thanks!
Hi , i had configured serveral relays
with postfix for exchange works
like charme
i use spampd on this relays
the most importend thing at a relay is
bringing the valid smtp adresses from exchange
to postfix so that postfix can reject with no relay user to
attacks, you can do this by adresse table ( may edit it with webmin if
you need a gui )
or let ask postfix via ldap to the active dir , or dump addresses out of
exchange active dir copy it to access table to postfix via ssh by cron.
The config for a relay before exchange is nearly the same as for a back
mx server , look at postfix docs, use a transport table
to forward to exchanges ip , and configure exchange
to relay out over postfix , do this with sasl auth only for your domains
cause exchange changes the mail from by forwards and this might
give you trouble at other servers which make checks about dns mx entires.
You might use selective greylisting , policyd-weight, dkim signing , spf
libs on postfix too, and for sure clamav milter.
This may result in nearly 99 % spam free mailboxes in exchange.
--
Best Regards
MfG Robert Schetterer
Germany/Munich/Bavaria
