In defense of those who haven’t read the RFCs personally — I can count on one hand the number of times I’ve seen SPF macros in the wild, which holds true if I included yours.
Interestingly all Proofpoint customers too.
I’ve seen it more common to isolate services to subdomains and specify subdomain SPF records rather than use macros. This is my preferred approach.
I’m not hating on the macros. They’re just seemingly very rarely used. I know they’re on the table but I haven’t found a compelling use case in my own deployments.
Interestingly all Proofpoint customers too.
I’ve seen it more common to isolate services to subdomains and specify subdomain SPF records rather than use macros. This is my preferred approach.
I’m not hating on the macros. They’re just seemingly very rarely used. I know they’re on the table but I haven’t found a compelling use case in my own deployments.