On Mon, 2009-07-27 at 10:55 +0100, Simon Waters wrote: > On Monday 27 July 2009 10:40:34 Martijn de Munnik wrote: > > > > I'm using a couple of anti-spam techniques which successfully reject > > (5xx) or ban (ipfilter firewall rule) most spam before even getting in > > the queue. > > You use a LOT of blacklists, which probably results in more false positives > than needed. > > I'd suggest if you want to use more than one or two blacklists you use > something like policyd-weight, although it is a little fiddly to get set-up > just so in my experience once running it is pretty good. > > http://www.policyd-weight.org/
Oke I'm going to check that! > > > A couple of days ago about 2600 spam messages where delivered > > to an user with a catch-all account. These messages where classified as > > SPAM or SPAMMY by spamassassin and where indeed spam. I wonder why these > > messages got through at all? > > Without knowing the content of the email, or details of the senders, it is > going to be hard for folks to comment. It seems most of those messages are DSNs. > > Here the usual "catchall" problem is bounces, which defeat greylisting and > block lists because they come from servers we'd (plausibly at least) want to > accept email from. > > I'd suggest losing the catch-alls, it is simple, effective, and has a low > false positive rate as not many genuine correspondents make up email > addresses to try. Losing catchall seems to be the best solution but some of my customers want to create an emailaddress for every website the register on. [email protected] [email protected] [email protected] etc. Then they use their mail client to filter the messages and put them in folders. Off course they can create aliases on the admin panel but customers are lazy ;) > > Simon > > Met vriendelijke groet, Martijn de Munnik -- YoungGuns Kasteleinenkampweg 7b 5222 AX 's-Hertogenbosch T. 073 623 56 40 F. 073 623 56 39 www.youngguns.nl KvK 18076568
