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My ISP adds headers that identify spam and viruses. How do I filter on a custom header?

April 26, 2017adds Custom filter header headers identify ISP spam viruses

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My ISP adds headers that identify spam and viruses. How do I filter on a custom header?

1 Answer

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You can filter on a custom header. The drop-down list of headers defaults to the commonly used headers, but you can edit the list and add new entries. Create a filter in the normal way and select “Header” as the condition. Simply start typing in the list box to edit or add a header.