Domains with DNS TXT v=spf1 +a +mx +a:m.upstream.be include:spf.smtp2go.com include:servers.mcsv.net -all

There are 4 domains that have DNS TXT set to v=spf1 +a +mx +a:m.upstream.be include:spf.smtp2go.com include:servers.mcsv.net -all. The top 4 records ordered by domain rank are listed below.

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