Domains with DNS TXT v=spf1 a:mail.regioplan.at a:news.regioplan.at a:websmtp.world4you.com include:spf.sendinblue.com -all
There is 1 domain that have DNS TXT set to v=spf1 a:mail.regioplan.at a:news.regioplan.at a:websmtp.world4you.com include:spf.sendinblue.com -all.