I have enabled email spam and virus filtering. I have two questions;
- Is there a way to feed nonrecognized junk mail back to the
system to make it learn?
- My virus database is updated 2 times a day. But the status
always is "Last update not available". Is there anything I should
check?
On Dec 24, 2007, at 8:56 PM, Rene Schaetzl wrote:
I actually did some customizations beyond what Apple offers (in
10.4). Kind of following this great article.
It's postfix. If you're serious at all about using the full
capabilities of postfix, start with the topicdesk "frontline spam
defense" tutorial.
But you really need and want to understand what it's doing any why.
and in particular, the write-ups from J Seymour, M Wong and J Posluns
Note that you should not install anything (and don't need to), and
for that reason and others, adjust carefully for your environment
(OS X Server, and
there are key differences between what Apple provides in 10.5 vs.
10.4).
I guess you are correct the article does not replace a real
understanding of the whole postfix deal involved. I liked it because
it gives you a nice place to start and get some ideas about handling
spam emails.
Before I did any changes to my life system I actually read up on all
those settings in either the postfix documentation or the 'Postfix:
The Definitive Guide' from O'Reilly.
It also still required some more fine tuning afterwards. Especuially
for greylistin, there are some servers that just don't use the
official mail protocols, for these there is a default whitelist again http://greylisting.org/whitelisting.shtml
I also had to explicitly whitelist some sites, because of 'customer
demand', i.e. my users where crying out loud. Sites like hotmail.com
seem to attract spammers etc and are sometimes in the blocklist. But
for some reason everybody (even businesses) here in China seems to be
using hotmail. So I had to open that one up again :-(
Overall I spend 2-3 days fulltime on adding these changes and the
results are totally worth it. I also gained a much better working
understanding of postfix in the process.
