Domains with DNS TXT v=spf1 mx include:knihovny.koha-system.cz include:spf.protection.outlook.com -all
There is 1 domain that have DNS TXT set to v=spf1 mx include:knihovny.koha-system.cz include:spf.protection.outlook.com -all.
There is 1 domain that have DNS TXT set to v=spf1 mx include:knihovny.koha-system.cz include:spf.protection.outlook.com -all.