The rule for this filter is Stop Processing Rules

In this filter, you insert only business domain names from which you want to receive email, not entire email addresses. This filter exists just in case some of the filters that follow this filter would contain a criterion that would flag some of your clients’ email as spam, say as a result of an overlook concerning the pertinence of some keywords used to flag spam.

Same as for the White List - Business filter. But in this filter you insert the entire email address of white listed senders.

Default setting provided by the cPanel is +++++. This setting is very conservative. A more aggressive single + setting will catch all spam identified by Apache SpamAssasin™. If the email received ever happens to not be spam, it will bounce back to the sender with the fail message that contains three digit number 001. You can use this number to identify which spam filter was triggered by the sender’s email. Example: "001 - Your email has been identified as spam and discarded - 001".

So far, for our domain, this technique has not produced a single false positive.

In this filter, you can list all domain extensions from which you receive spam.

Note: The spam criterion is identified in the email’s header (Google > how to read email headers).

A right arrow head (>) follows immediately the extension. Otherwise, this filter may intercept legitimate emails that may contain, say as an example, club, as part of the domain name or the sender’s name, say as an example info@sierraclub.ca

Please note the dot (.) before the letters of the extension.

As for the previous filter, if the email received ever happens to not be spam, it will bounce back to the sender with the fail message that contains three digit number 002. You can use this number to identify which spam filter was triggered by the sender’s email. Example: "002 - Your email has been identified as spam and discarded - 002".

So far, for our domain, this technique has not produced a single false positive.

In this filter, you can list all domain extensions of countries from which you receive spam.

Note: The spam criterion is identified in the header. A right arrow head (>) follows immediately the extension, as otherwise this filter may intercept legitimate emails that may contain, say as an example, ru, as part of the domain name or the sender’s name, say as an example smith.rupert@legitdomain.com

Please note the dot (.) before the letters of the extension.

In this case here, the criterion for the eu extension is From, rather than the header. Because some of your clients may be located in North America while using a server located at their company’s headquarters in Europe.

In this case here, the character that follows .kz is a parenthesis ), as it was the only distinguishable criterion in the spammer’s email header.

As for the previous filters, if the email received ever happens to not be spam, it will bounce back to the sender with the fail message that contains three digit number 003. You can use this number to identify which spam filter was triggered by the sender’s email. Example: "003 - Your email has been identified as spam and discarded - 003".

So far, for our domain, this technique has not produced a single false positive.

In this filter, you can list all domain extensions from which you receive spam.

Please note the dot (.) before the letters of the extension.

As for the previous filters, if the email received ever happens to not be spam, it will bounce back to the sender with the fail message that contains three digit number 004. You can use this number to identify which spam filter was triggered by the sender’s email. Example: "004 - Your email has been identified as spam and discarded - 004".

So far, for our domain, this technique has not produced a single false positive.

In this filter, you can list all keywords included in the spam emails that you receive and which previous filters do not catch.

As for the previous filters, if the email received ever happens to not be spam, it will bounce back to the sender with the fail message that contains three digit number 005. You can use this number to identify which spam filter was triggered by the sender’s email. Example: "005 - Your email has been identified as spam and discarded - 005".

So far, for our domain, this technique has not produced a single false positive.

In this filter, you can list all domains — that previous filters do not catch — from which you receive spam.

Note: The Action for this filter is Discard Message. There is no point in telling spammers that your email address is valid. It also causes them to waste resources (bandwidth, time and money) as you do not even get to read their spam.

So far, for our domain, this technique has not produced a single false positive.

In this filter, you insert the email address of people from whom you do not want to receive any email. Just set it to discard their message as for the previous filter. It also causes them to waste resources (bandwidth, time and money) as you do not even get to read their spam.

So far, for our domain, this technique has not produced a single false positive.

You never send emails to yourself using the same To and From address. So, in this filter, you insert your own email address which some spammers list in the From line of emails sent to you as spam. Here the address illustrated is fictional of course; you have to insert your actual email address. It also causes them to waste resources (bandwidth, time and money) as you do not even get to read their spam.

So far, for our domain, this technique has not produced a single false positive.

This filter can be used as a bypass filter should a sender tell you that there are problems sending you email. You use it to bypass all your filters just in case one of your filters would be the source of the problem.

Simply insert a string of particular digits in the From field and move this filter (click and drag) to the top of the filters list. From that position, it will bypass all your filters below it. It will save you deleting your filters and then having to recreate them once you’ve found the source of the problem; which latter may not be any of your filters but some network problems for instance.