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216.73.216.111
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stadtwerkebarmstedt-de02e.mail.protection.outlook.com
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SPF
stadtwerkebarmstedt-de02e.mail.protection.outlook.com
SPF record
Queried
just now
DNS resolution error
Querying SPF record for stadtwerkebarmstedt-de02e.mail.protection.outlook.com failed.
check TXT records