Domains with DNS TXT v=spf1 ip4:212.1.210.51 include:mailchannels.net a mx include:relay.mailchannels.net ~all

There are 2,050 domains that have DNS TXT set to v=spf1 ip4:212.1.210.51 include:mailchannels.net a mx include:relay.mailchannels.net ~all. The top 50 records ordered by domain rank are listed below.