On 2023-04-18, Lance Lovette via Exim-users <exim-users@???> wrote: >> This is a name mismatch: mailgun.org != mailgun.com.
>
> Perhaps it's time for a larger font size :) I will put on my dunce cap and
> go sit in the corner. But shame on Mailgun for responding to .com with a
> .org certificate!
>
> Lance
Their .com is a cname pointing to the .org, so the same host is both
.com and .org, but their host isn't using SNI.
