Domains with DNS TXT v=spf1 a mx ip4:212.1.210.51 include:relay.mailchannels.net ~all
There are 1,368 domains that have DNS TXT set to v=spf1 a mx ip4:212.1.210.51 include:relay.mailchannels.net ~all. The top 50 records ordered by domain rank are listed below.