Thanks, If I use reverse dns domain that OVH gave me 211.ip-164-132-48.eu as hostname, it would be ok?
If I have also ipv6, Should I type spf like this:
v=spf1 +mx +a a:vps343915.ovh.net ip4:164.132.48.211 ipv6:2001:41d0:401:3000:0:0:0:2c86 ?all
or
v=spf1 +mx +a a:vps343915.ovh.net...