spf include ~all

when I include a spf domain in my spf record but the included spf domain has ~all in its txt record, but my record has -all in it.
What does this effectively mean? Do all ip numbers not included in my spf record and in the included spf record generate a softfail? or is my -all leading?
Richard FrankSystems AdministratorAsked:
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Marcus BointonCommented:
As per the SPF RFC, this does not constitute a 'back door' into your '-all' default action, so you don't need to worry about it.

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Richard FrankSystems AdministratorAuthor Commented:
just what I needed to know.
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