Domains with DNS TXT v=spf1 mx a:mail.netdirect.cz a:smtp.geis.cz a:mail.geis.cz a:mail2.netdirect.cz -all

There is 1 domain that have DNS TXT set to v=spf1 mx a:mail.netdirect.cz a:smtp.geis.cz a:mail.geis.cz a:mail2.netdirect.cz -all.

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