(08-28-2016, 12:51 AM)royce Wrote: Assuming that the stated host is the only source, something along these lines would be a starting point:
Code:IN TXT "v=spf1 ip6:2a03:f80:ed15:149:154:152:149:1 ~all"
I'm sure not all mail providers are supporting IPv6, so would be good to include 149.154.152.149 ip as well.
Code:
IN TXT "v=spf1 ip6:2a03:f80:ed15:149:154:152:149:1 ip4:149.154.152.149 ~all"
DKIM is also highly recommended as well as setting DMARC policy so nobody will forge emails from hashcat.net domain name.