Hey All,
I ran into this issue, and I wanted to pass the solution on incase anyone else encounters it.
Back in July for a few reasons, I moved my email hosting from iCloud (using the custom domains feature) to another provider (fastmail). When I did that, I just updated my DNS entries and left the iCloud side configuration (email aliases, etc) alone. Just in case I wanted to come back, it would just be a matter of setting up the DNS again.
At the time I was using SparkMail and had no issues. A few weeks ago, I decided to go back to using apple mail since they'd incorporated the main feature I liked about spark. At that point, anytime I emailed someone hosted on gmail, the message would bounce immediately with a message that my DKIM records were not correct.
It turns out that because I'd not deleted those email aliases and domains, Apple Mail was checking those first and sending the messages to the iCloud SMTP servers, rather than using DNS and sending to my new provider.
Dumb mistake on my part, but just incase anyone else makes the same mistake the fix is to delete the domains in your iCloud settings.
I ran into this issue, and I wanted to pass the solution on incase anyone else encounters it.
Back in July for a few reasons, I moved my email hosting from iCloud (using the custom domains feature) to another provider (fastmail). When I did that, I just updated my DNS entries and left the iCloud side configuration (email aliases, etc) alone. Just in case I wanted to come back, it would just be a matter of setting up the DNS again.
At the time I was using SparkMail and had no issues. A few weeks ago, I decided to go back to using apple mail since they'd incorporated the main feature I liked about spark. At that point, anytime I emailed someone hosted on gmail, the message would bounce immediately with a message that my DKIM records were not correct.
It turns out that because I'd not deleted those email aliases and domains, Apple Mail was checking those first and sending the messages to the iCloud SMTP servers, rather than using DNS and sending to my new provider.
Dumb mistake on my part, but just incase anyone else makes the same mistake the fix is to delete the domains in your iCloud settings.