As someone mentioned about Trustic in another thread, the spam databases that IMail comes with by default list yahoo.com and nail any mail from it as such. As my rules authorship is very much in question considering some of the internal loops I have created, is there a way to tell IMAil a to ignore any negative results for an email from yahoo.com via the external databases? The whitelist only applies to content filters - and you cannot change the pecking order to whitelist it first before it hits the spam databases. Of course, if a word hit the content filters, it would nail it there provided it was not a whitelisted yahoo.com address. I realize some administrators would not open up yahoo.com, but if I want to take that chance, I am wondering what the rule IMail rule would be - if even possible.
My recommendation would be not to use the FIVETENIGNORE test -- by definition, it will catch E-mail from large Internet providers such as Yahoo. That way, you get the best of both worlds -- you won't capture legitimate E-mail from Yahoo, and you will catch spam from @yahoo.com addresses.
If you're using Declude JunkMail, you have the option (not recommended, though, as many spammers use @yahoo.com addresses) of whitelisting all E-mail to @yahoo.com (if you whitelist it, it will be delivered, no matter what). A number of our customers will set up a filter to reduce the weight of E-mail from @yahoo.com addresses, which can help make up for the FIVETENIGNORE and a few other spam tests that tend to list Yahoo. That, too, helps ensure that the legitimate mail gets through while blocking the spam.
-Scott
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