[Exim] regex list

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I am done some searching but no luck.

As we all know, in the spam handling, we have:

regex = keyword : keyword2 : etc....

I would like to have this list in an external file, so I can replicate
it to other servers automatically. What would the syntax be for the
regex expression?
Also, in the external file, would it be the same syntax for the list as
above?

Thanks!

Mark
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