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. Thanks a lot. Mohamed.
