I have a Pearl 8130 using BIS. I get a fair amount of spam email with 'undisclosed-recipients:' in the TO: field. The from field is unpredictable. I am assuming that the email provider we use (work email) puts this in the field. However I cannot filter on this. I have tried this multiple times with different filters yet it always gets through. Does anyone have any ideas on how to filter on this?
A relatively easy way is to create a filter that will only allow mails through if your address is in TO or CC. It's much easier to create a filter for what you want than otherwise.
That should knock out the majority of spam. You may have to tweak or create the filters to get rid of more.
