Rules

CanIt Rules allow you to customize SPAM categorization to suite your particular needs.
Customized rules can be applied to individuals, entire organizations, or even a particular server on the Internet using the following Sub-Tabs:

  • Senders – manage an individual person’s E-mail address (ie: john.smith@widgets.com)
  • Domains – manage an organization’s Internet domain name (ie: google.com)
  • Hosts – manage a particular computer’s IP address on the Internet (ie: 72.14.207.100) – its not recommended to manage custom rules this way

Click on the Sub-Tab of the E-mail addresses you wish to manage. Please see the (Show Help) link on each page for detailed information on how to add new rules.

CanItSenders

Figure: Rules Definitions

For each of these levels of granularity, from individual to entire organization, you then select how any messages received by them will be categorized:

  • Always Allow – E-mail from the sender will always be delivered to your INBOX
  • Always Hold for Approval – E-mail from the sender will always be moved to the CanIt Pending Trap
  • Always Reject – E-mail from the sender will always be moved to the CanIt SPAM Trap
  • Hold if Looks Like Spam – E-mail from the sender will be held if it is in your SPAM score threshold (normal CanIt behavior)

Each type of E-mail (person, organization) can be categorized however you require…

Common Scenarios

A person you deal with regularly via E-mail is consistently being put in the Pending or SPAM Trap of CanIt
This can happen for a variety of reasons (click on the timestamp of one of these messages to see why CanIt blocked the message). A common reason is the sending person is using a common Spammer E-mail domain name, such as hotmail.com. You don’t want to Always Allow any messages from hotmail.com to be sent to your INBOX, though, so you would do the following:

  1. Click on Senders under the Rules tab.
  2. Enter the person’s e-mail address (ie: jim_99@hotmail.com) in the field provided
  3. Click the  button
  4. Now, from the pull-down menu, select the action to be taken for this E-mail address — ‘Always Allow’ in our example.
  5. Optionally add a comment to identify the person
  6. Click the  button

Now any e-mail from this person will be sent to your INBOX automatically.

A company you deal with regularly via E-mail is consistently being put in the Pending or SPAM Trap of CanIt
This can happen for a variety of reasons (click on the timestamp of one of these messages to see why CanIt blocked the message). A common reason is the sending company is E-mailing sales information to you. In this case you do want to receive all the e-mail from this organization, so you would do the following:

  1. Click on Domains under the Rules tab.
  2. Enter the company Internet address, everything after the ‘@’ (ie: sears.com) in the field provided
  3. Click the  button
  4. Now, from the pull-down menu, select the action to be taken for this E-mail address — ‘Always Allow’ in our example.
  5. Optionally add a comment to identify the company
  6. Click the  button

Now any e-mail from this company will be sent to your INBOX automatically.

A person you don’t know seems to be consistently sending SPAM E-mail to you
You may, from time to time see the same sender address in messages that end up in your Pending Trap. Generally, if these are from Spammers, the e-mail addresses are fake and will change as the Spammer moves around the Internet.
Under very rare circumstances is it recommended to try and Always Reject E-mail from what appears to be a single individual, or even a single Domain Name. The effort spent doing so is just not worth the time.
CanIt, if used properly, will learn your individual unique definition of SPAM via a mechanism using Bayesian Filtering.
It is best to mark these types of messages in your Pending Trap as SPAM.

Tag these types of messages as SPAM in your Pending Trap, and CanIt will learn your definition of what is SPAM.

HELPFUL HINTS

  • It is not recommended to try and manage Rules at the Hosts level. You must specify an Internet IP address, which can change, or be faked by a Spammer. It is much better to let CantIt! learn your SPAM definitions by marking messages in your quarantine as SPAM.
  • When selecting a domain to Always Allow be careful to ensure you use the correct domainname. Do not select the domain canoe.ca if all you want to do is Always Allow from someone at cnews.canoe.ca