Need DNS records help for single server (and IP), and multi-domain mail server.

[Tom Browder]

On Wed, Aug 23, 2017 at 2:28 PM, Tom Browder <tom.browder at gmail.com> wrote:
...
> I have a single remote server with one IP address (142.54.186.2) I am using
> it to host multiple, independent domains.  I am working on configuring a
> single postfix instance to serve mail for all domains (assuming I can
> successfully rewrite appropriate parts of mail in and out).
>
> Given such a configuration described in the first paragraph, does the
> following set of DNS records for a domain look look appropriate:

Based on all the comments, I've modified the OP list to this:

# For each domain X.TLD:
X.TLD.      IN   A               142.54.186.2.
*.X.TLD.    IN   CNAME     X.TLD.
X.TLD.      IN   MX            10 X.TLD.
X.TLD.      IN   TXT           "v=spf1 mx ?all"

How's that set?

-Tom