Domains with DNS TXT v=spf1 a mx mx:mail.omikron-gmbh.de mx:mail.omikron-dns.de -all

There are 3 domains that have DNS TXT set to v=spf1 a mx mx:mail.omikron-gmbh.de mx:mail.omikron-dns.de -all. The top 3 records ordered by domain rank are listed below.

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