Comment Comment by brightball Why not just rotate them frequently? Like weekly? Or daily even?ProtonMail makes you setup 3 CNAMEs for DKIM just so they can frequently rotate without your intervention or disruption. Sendgrid uses 2 for the same thing. parent brightball 6 years ago
ProtonMail makes you setup 3 CNAMEs for DKIM just so they can frequently rotate without your intervention or disruption. Sendgrid uses 2 for the same thing.