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Enter your domain name in the first field (below is that exampledomain.nl), and tick the same values as in the image below. It is important to set up our outgoing e-mail servers at Add any domains that mail deliver this domain: _spf.managedomain.nl.
Note on last option:
We always recommend using a softfail unless the domain is actively abused for spam ( Joe Job ) or when security of the domain plays a very important role. This is because SPF can disrupt email forwarding on the receiving end (something that you can not influence).
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