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There is 1 domain that have DNS TXT set to v=spf1 a mx a:steuerkoepfe.de include:ispgateway.de include:spf.m-1.eu-1.quentn.com include:spf-de.emailsignatures365.com include:spf.protection.outlook.com include:spf.flatyourit.de ~all.

Top Domains with TXT set to v=spf1 a mx a:steuerkoepfe.de include:ispgateway.de include:spf.m-1.eu-1.quentn.com include:spf-de.emailsignatures365.com include:spf.protection.outlook.com include:spf.flatyourit.de ~all