CanIt is a server-based spam-control system built around SpamAssassin, MIMEDefang, Apache, and PostgreSQL. It features sophisticated spam-handling techniques which minimize the amount of spam you receive while guaranteeing that you'll never lose a valid email. CanIt achieves extraordinarily accurate discrimination through human intervention, and includes mechanisms to minimize the amount of human intervention required.
| Tags | Communications Email Filters |
|---|---|
| Operating Systems | POSIX Unix |
| Implementation | C PHP Perl |
Recent releases


Changes: Statistics have been completely reworked; CanIt now includes many reports with charts. A major architectural change stores large textual data in a dedicated storage manager instead of PostgreSQL, which greatly increases scalability. There are many other minor new features and fixes.


Changes: Statistics have been completely reworked; CanIt now includes many reports with charts. A major architectural change stores large textual data in a dedicated storage manager instead of PostgreSQL, which greatly increases scalability. There are many other minor new features and fixes.


Changes: The old "Access Rights" page is gone. In its place are far more flexible "Permissions" pages that allow fine-grained control over permissions on a per-user and per-group basis. Hit-and-Run (also known as "Greylisting") can be enabled on a per-stream basis. The old "Stream Redirection" concept has been replaced by "Stream Inheritance". This is more flexible and simplifies the code a lot. A new caching scheme has reduced the number of database queries per email substantially, sometimes by more than 50%.


Changes: The old "Access Rights" page is gone. In its place are far more flexible "Permissions" pages that allow fine-grained control over permissions on a per-user and per-group basis. A new caching scheme has reduced the number of database queries per email substantially, sometimes by more than 50%.


Changes: By default, this release rejects email from domains with bogus MX addresses (for example, MX hosts that resolve to the loopback address or private IP addresses.) Most Web pages that list various tables have a "filter" box to make searching for specific entries much faster. There are many other minor improvements, bugfixes, and performance improvements.
Uses rsync to manage archives of clients across multiple logical partitions.
- All comments
Recent commentsFantastic program
I'm the email admin for a company that has been using the commerical version of CanIt for more than 2 years now. It is the best Spam filter I've ever found, probably because it builds on Spamassasin, MimeDefang and Sendmail. I found the install to be very easy and the documentation of high quality (as you would expect from a commercial program). Now that it's free for under 50 users, every small business and private user that runs their own mail server really should use it.