Domains with DNS TXT v=spf1 ip4:37.128.129.17 a mx include:spf.constantcontact.com include:spf.mtaroutes.com include:smtproutes.com include:smtpout.com include:authsmtp.com -all

There is 1 domain that have DNS TXT set to v=spf1 ip4:37.128.129.17 a mx include:spf.constantcontact.com include:spf.mtaroutes.com include:smtproutes.com include:smtpout.com include:authsmtp.com -all.

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