On Sunday, February 23, 2020 6:44:34 PM EST Mohamed Lrhazi wrote: > On Sun, Feb 23, 2020 at 3:23 PM Benny > > > https://dmarcian.com/spf-survey/?domain=spf.255.cuaemail.org > > > > see Record flattening > > record flattening is the process of replacing include, and other lookup > generating mechanisms, with their resulting ip addresses. > My question is how many IPs can one put in a single spf record? > > It appears the RFC does not touch on this, so I guess it’s left to the > implementors to decide, and from my limited tests it seems to vary a lot.
The limits are a function of DNS, not SPF, which is why RFC 7208 Section 3.4. was written. Scott K
