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Add convenience to your spam blocker (continued)
Further additions
Of course there are many further improvements possible:
We modified the icon column in the views and folders to display an umbrella (it's raining spam) if an email is flagged as spam. See Figure A.
FIGURE A
 
Add a new image to the image resources. Roll over picture for a larger image.
Just add this into the first line:
@If($DNSBLSite != ""; 147; <Rest of code is unchanged>)
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We also added a new letterhead that is displayed on each spam message. Choose your icon, add it to the image resource, and alias it StdNotesLtr35. Open form Memo (do the same in "Reply" and "Reply with history" later on) and modify the hidden item Logo at the top. Only the last line needs to be added:
@If(@IsNewDoc; @If(@GetProfileField("CalendarProfile";"DefaultLogo")= "";"stdNotesLtr0";@GetProfileField("CalendarProfile";"DefaultLogo"));
!@Contains(From; "@"); Logo;
@IsAvailable($DNSBLSite); "StdNotesLtr35"; "StdNotesLtrGateway")
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Further ideas
Since we have a personal Whitelist, why don't we have a personal Blacklist? Actually, we do. You could just use the Rules Lotus implemented in R5 in each mailfile. Therefore, we didn't add anything like that (even though you might filter IP addresses with Script) for three reasons. First, your users may learn to use rules faster, second, we don't want to give the mail server too much to do, and third, we hope that the performance of Lotus Rules is better than writing a LotusScript.
Maybe you want to run your own Blacklist? Your users may complain that a specific IP address is listed or not listed on the Blacklists. If you're responsible for the lists, this may be a time consuming job.
Final conclusion
By implementing these features, you're already a big step ahead in the fight against spam. If after a testing period you think you need additional protection, there are a lot of commercial tools that use other protections like content-filtering.
Last but not least, here are two quite obvious tips: don't buy anything from spammers, and make sure your servers are not misused by spammers as an open relay.
Ashley Parsons coordinates a tradeshow list for Synchrologic, a developer of Internet-based mobile computing software for the enterprise.
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