"SPF record settings", by Cliff H.

Question "SPF record settings", by Cliff H.

Which IP addresses or name servers are required to set a correct SPF record?

mail.gandi.net is not the real server seen by the SMTP servers on the internet which has to be authorised in the SPF record.

Our mail relays are all within the same 21-bit prefix length, but spread across a number of different LANs for resilience purposes.

Here is an SPF record that should work for your domain if you use the gandi mail servers:

 IN   SFP   "v=spf1 ip4:217.70.176.0/21 ?all"
 IN   TXT   "v=spf1 ip4:217.70.176.0/21 ?all"

; included TXT version for backwards compatibility with ; old SPF lookup mechanisms.