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v=spf1 a mx ip4:109.74.149.8 ip4:93.184.69.132 ip4:109.74.149.34 ip6:2A01:390:1:6:20C:29FF:FE69:D88 a:postak.nextis.cz ~all
spf2.0/pra a mx ip4:109.74.149.8 ip4:93.184.69.132 ip4:109.74.149.34 ip6:2A01:390:1:6:20C:29FF:FE69:D88 a:postak.nextis.cz ~all