This document is last updated 17-July-2006.
Why does this page only refers to Pegasus Mail?
Mercury/32 version 4.1 and Pegasus Mail version 4.41 share the same mechanism for using Pegsus Mail's Global Whitelist. Mercury/32 will look for the file white-m.pm in the users home mailbox location and when the senders address is in that list will take no further anti-spam actions on the message.
Just for the record: Mercury/NLM (for Novell) does not have this feature.
General Global Whitelist information
Pegasus Mail provides extensive filtering capabilities, aimed mainly at dealing with spam, or unwanted commercial mail. Unfortunately, there is no anti-spam technique that can guarantee it will provide 100% accuracy in discriminating between spam and not-spam messages - inevitably, at some point, a spam filter is going to classify a message as spam when it is not. When this happens, the mis-classified message is known as a false positive. False positives can have very serious implications - imagine, for a moment, that a very large order comes in but is incorrectly classified as spam: if you don't happen to scan your folder in time, you may lose the order.
Because the consequences of having false positives are so serious, Pegasus Mail provides a mechanism to help reduce them - it allows you to create a Whitelist of addresses from which all mail is to be assumed to be not-spam. When Pegasus Mail finds a message from a sender whose address appears in your whitelist, it will not pass the message to either Spamhalter or to Content Control, but will mark it as whitelisted instead and leave it in your new mail folder. Note that whitelisting does not prevent a message from being processed by your New Mail Filtering Rules, although a rule test exists that allows you to detect whether or not a message has been whitelisted in your rulesets (this test is an attribute test and can be created by clicking the "Attribute" button in the filtering rule editor window).
You can manage your whitelist by selecting the Whitelist... option from the Spam and content control submenu of the Tools menu in Pegasus Mail. This will open the Whitelist management dialog, where you can add and remove addresses, and control the behaviour of the whitelist.
Your current whitelist appears in the list control at the top of the dialog. Because the list can contain many hundreds of addresses, a Find... button allows you to do an incremental search through the list: this means that you can enter a few characters from anywhere in the address you want to find, and the search code will automatically find the first occurrence of those characters in the address list. To skip past that occurrence and find the next match in the list, click the Next button, or alternatively, type in a few more characters that narrow down the search even further.
You can manually add addresses to your whitelist using the Add button. Similarly, you can remove addresses using the Delete button, and change existing entries using the Change button.
Maximum number of entries in whitelist
Setting the number of entries to zero
Automatically whitelist any address to which I send mail
Make this whitelist visible for Mercury/32 to use
Specialized address forms
You can only add specialized address forms of this kind using the Add button in this dialog - Pegasus Mail will never add them automatically.