Hi there,
I’ve been watching my Google Postmaster Tools dashboard for months and have noticed that the SPF success rate for my emails is all over the board. Sometimes it says 100% successful, sometimes 0%. Often, the SPF success rate for the same email sent to different lists (with a different sending email address) is different even though they were sent at the same time. I can see nothing that I could be doing that would change this SPF rate literally from day to day. The DKIM success rate seems to consistently be 100% and the DMARC success rate is consistently 0%.
I’m a little concerned about the SPF rate as I think I’m starting to see a correlation between my open rates and the SPF success rate. When the SPF rate is 0% lately, my open rate is down quite a bit on an email that received a good open rate the same day and roughly the same time to other similar lists.
So I’m just wondering if you could fill me in on why the SPF success rate is so fickle and if there is anything that you or I can do about it.
Thanks!