Re: Sendmail and DKIM for bounce messages?

Marco Moock <mm@dorfdsl.de> wrote:

On 19.03.2025 14:46 Uhr Otto J. Makela wrote:

As I said, clients have added our sendmail-based server (smarthost) in
their SPF record (SPF does not come into play with the mail generating
servers that are hosted with us, we use a simple IP-address based
access table to permit them to send emails to our smarthost).

>
If MAIL FROM: is <>, the SPF will be checked against the hostname in
EHLO. Check which hostname is being used there and create and SPF for
it.

Dammit, should have remembered that.
I've now added the appropriate SPF record, let's see if it makes a difference.
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