Domains with DNS TXT v=spf1 include:spf.protection.outlook.com ip4:64.26.160.183 include:outboundmail.convio.net -all

There is 1 domain that have DNS TXT set to v=spf1 include:spf.protection.outlook.com ip4:64.26.160.183 include:outboundmail.convio.net -all.

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