I agree with previous poster RE: Postini, we have clients that use the service and it's fantastic. I use Postfix / Amavisd - Clam-AV / SpamAssassin + SARE rulesets (with DCC, Pyzor, Razor) locally and ater the initial setup it's excellent. I've also done just Postfix / Amavisd - Clam-AV / SpamAssassin + SARE and used Greylisting for other clients as well and that's been unbelievable. Greylisting as a method to reduce spam is the heat! In both of the above setups are spread across 3 machines in a multi-tiered architecture. Use your DMZ to pre-filter, with Postgrey, header checks, body checks, then allow to next hop where you can spam-check, virus check, then allow to local intranet mail server for local delivery / IMAP. But if you want to farm it out - use Postini. -Peter 2008/6/8 Jason Pyeron <jpyeron at pdinc.us>: > > >> -----Original Message----- >> From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On >> Behalf Of Frank Cox >> Sent: Sunday, June 08, 2008 4:04 PM >> To: CentOS mailing list >> Subject: Re: [CentOS] sendmail and spam >> >> On Sun, 08 Jun 2008 15:39:31 -0400 >> Mark Weaver <mdw1982 at mdw1982.com> wrote: >> >> > I.e. if a business in Pennsylvania only does business in the lower 48 >> > there isn't any need to accept port 25 traffic from Asia, Europe, Latin >> > America, etc... > > We have foreign language emails from foreign countries, so this and other > assumptions about content are a big no-no. > >> >> Until "something comes up" and your users and/or customers are sunk. >> > > Ditto. > > We are using Postini. It is a spam filtering service from Google at 3$ per > email address (aliases are free) per year. We have no load they are > promising the API will be re-enabled in the upcoming weeks. > > We have only had 2 messages with a false positive and one with a false > negative. Mail volume is around 10,000 messages per day. Latency is next to > zero. > > Sorry for the advert, but its what we are using. > > Jason > > > -- > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > - - > - Jason Pyeron PD Inc. http://www.pdinc.us - > - Principal Consultant 10 West 24th Street #100 - > - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - > - - > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > > This message is for the designated recipient only and may contain > privileged, proprietary, or otherwise private information. If you > have received it in error, purge the message from your system and > notify the sender immediately. Any other use of the email by you > is prohibited. > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >