[newbie] solaris sendmail mail gateway spam filtering

[Guido Lenk]

hi,

i a newbie to sendmail and i want to filter spam for my site.

i have an solaris8-sendmail (8.11.6) box in the dmz that delivers all
mail to my internal mailserver (no sendmail) and sends all outgoing
mail from the internal to the outside world.

now i want to filter spam on the dmz before it gets to the inside.

i would like to use spamassasin but i don't know how to install it. Do
i have to install milter first? how do i install milter feature on
solaris? i would even use dnsbl but i can't figure out how.

don't think i haven't searched enough.. i am searching since 2 days
but i can't find anything that fits my skill ;) :(

can anyone give me a hint where to get a good step-by-step howto?

Thanks
Guido
--
Guido Lenk University of Passau
Systemadministrator 94030 Passau, Germany
Tel.+49 (851) 509 - 3187
Institute for Information-Systems Fax +49 (851) 509 - 3182
and Softwaretechnique [url]www.ifis.uni-passau.de[/url]

[Hannu Liljemark]

Guido Lenk wrote...

> i have an solaris8-sendmail (8.11.6) box in the dmz that delivers all
> mail to my internal mailserver (no sendmail) and sends all outgoing
> mail from the internal to the outside world.

...

> i would like to use spamassasin but i don't know how to install it. Do
> i have to install milter first? how do i install milter feature on
> solaris? i would even use dnsbl but i can't figure out how.

Run spamassassin from mimedefang is what I'd suggest you to do.

With sendmail you're looking at using some sendmail's milter API based
solution or procmail. mimedefang is one milter, there are few others
(just do a google search). The fact that you run Solaris doesn't
really matter.

You should replace Sun's sendmail with 8.12.9 from sendmail.org,
compiled with milter support. And maybe install perl 5.6.1 or 5.8.0 as
well incase you have Solaris 8 and perl 5.005_03 now.

Read mimedefang documentation (manualpages, FAQ, everything in the
tarball) and search the mimedefang mailing list for ideas.

Or if it's just local delivery and not relaying the mail to some
internal mail server, using spamassassin via procmail might be an
option as well.

SpamAssassin website has some step-by-step guides, but you'll do alot
better by studying the available documentation and learning things on
your own. And with MIMEDefang you want to focus on MIMEDefang as it
does all the work. The guides usually just cover specific scenarios
and none of the guides might not cover your situation, so you need to
do some work on your own.