Free antispam software software for windows

ASB AntiSpam 2 is a flexible tool that blocks spam by sending an authorization request to new senders. The request must be responded to before the e-mail message is allowed to enter your inbox. ASB AntiSpam works with any e-mail client, and supports an unlimited number of e-mail accounts. You can use ASB AntiSpam for free, with no limitations.

Enhancements:

• Contains many improvements and bug fixes.

AntiSPAM Server can both in automatic, and in a manual mode to catch the SPAM. It will create lists of the White and forbidden senders.

hermes is an anti-spam solution that will help you get rid for good of (most) spam messages hermes is an anti-spam solution that will help you get rid for good of (most) spam messages.
hermes is a SMTP proxy. What makes it special is that it can be used to stop spam using a combination of the following techniques:
- SMTP banner delay
Most spammers will start sending data as soon as the connection is open, without waiting for the SMTP banner. What we do is delay this banner and if we have data waiting before we print it, we drop the connection.
- Throttling
hermes will process incoming SMTP commands at a slow pace. Most spammers have very little patience, so they will stop sending an email if its taking too long to deliver.
- Greylisting
Greylisting is a process that will delay incoming mails for some minutes before allowing them to be delivered. As most spammers will not resend their messages, you will not receive them. If you want a more technical description, scroll down to read a greylisting description.
- DNSBL
As of hermes 1.2 you can now configure hermes to reject emails coming from ips listed on your favourite DNSBL, using the rbl_domain option.
Main features:
- Multiplatform: hermes runs on Windows, Linux and Solaris
- Transparent: Although clients will connect to hermes, hermes wont display any message of its own or alter in any way the communications with your real mail server, except at the moment of greylisting.
- Efficient: We have gone to great lengths to make hermes as efficient as possible, both for your computer and for the SMTP server that it proxies.
- Configurable: hermes is highly configurable, from greylisting time to logging method and everything in between.
- Extension friendly: We support most SMTP extensions such as SMTP-AUTH and STARTTLS.
- Compatible: You can use hermes in combination with other techniques such as nolisting or Bayesian Filtering either on the client side or on the server side (or both if you prefer). You can also use fakehermes to fake a secondary smtp server and further reduce your spam.

Comodo AntiSpam Desktop 2005 is an intuitive, easy-to-use, client-based software product that eliminates spam forever from the computers email system. No license fees - No charges - No more Junk Mail!! Just register and install to start enjoying a 100% clean inbox.
Highlights of Comodo AntiSpam Desktop 2005:
- Total Spam Elimination - never wade through mountains of junk mail again
- No hassle set-up - install in seconds for instant spam free email
- Maximum Protection - Minimum Drain - kills spam without hogging system resources
- Supports all major clients - Outlook, Eudora, Netscape and other Pop3/SMTP
- Seamless integration - take the fight to the spammers with automatic spam reporting
- Youre protected - stay protected!!! - live updates ensure you are never at risk