On Thu, Jun 26, 2025 at 1:04 PM <tgarvey@xxxxxxxxxx> wrote:
Unfortunately I am ignorant about all those things you ask in your four points.
Does using SNDSMTPEMM provide for those things?
Almost certainly not.
DKIM, DomainKeys, & DMARC require configuration on the mail server and
DNS (to publish public keys).
One other thing I forgot to mention was publishing SPF DNS records.
Here's a pretty good explainer for those concepts:
https://www.cloudflare.com/learning/email-security/dmarc-dkim-spf
RDNS can be set up with your ISP, assuming you have a static IP.
I had to jump through hoops with Amazon to get RDNS setup for the
midrange.com list server.
In a nutshell: Sending email, and getting the mail delivered, used to
be very straight forward ... but isn't anymore.
david
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