On 2023-02-11 02:51 H via mailop wrote:


On 02/10/2023 10:13 AM, Gellner, Oliver via mailop wrote:

On 2023-02-10 04:08, H via mailop wrote:


I now did find that resource but it is written as general information and does 
not really tell how to get it going with IONOS if they run the email server...


As far as I understood you not only use Ionos as your registrar, but also use 
their email server to send your email through. Ionos does not DKIM sign emails 
on behalf of its customers, at least they didn't do so in the past. So the 
answer is simple: You do not set up DKIM or DMARC at all, because you can't.
The instructions given by Ionos are only valid if your email is sent and signed 
by some other server and you want to add the DKIM public key to your domain 
hosted at Ionos.

--
BR Oliver

Thank you, you are starting with the first issue, ie whether I can even have a 
DKIM record given that the domain is hosted by Ionos as is the mail server. 
Upon my additional research I have come to the same conclusion as you, ie not 
possible.

By the way, I stumbled across this posting on the net - 
https://serverfault.com/questions/1030262/record-dkim-on-ionos-makes-sense - 
that as far as I can tell is still true.

So, I will now look at creating a DMARC record given that I have previously 
created a SPF record and will not be able to have a DKIM record.

I recommend against setting up a DMARC record with a policy of quarantine or 
reject as long as DKIM signing isn‘t in place. The SPF authentication will 
break for all forwarded messages as well as for all automatic replies or 
non-delivery reports. It will do mire harm than good.
Of course if you‘re interested in the reporting you can create a DNARC record 
with a none policy and only change that after you have moved to a different 
email provider who supports DKIM.

—
BR Oliver

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