Domains with DNS TXT v=spf1 a:smtpout1.namebrightmail.com a:smtpout2.namebrightmail.com include:namebrightmail.com include:spf.improvmx.com -all
There are 865 domains that have DNS TXT set to v=spf1 a:smtpout1.namebrightmail.com a:smtpout2.namebrightmail.com include:namebrightmail.com include:spf.improvmx.com -all. The top 50 records ordered by domain rank are listed below.