(Solved) 2 DKIM records for one domain

Hello,
I have two different virtual servers as follows:
VM1 hosts domainone.com IP: Y.Y.Y.Y
VM2 hosts domaintwo.com IP: X.X.X.X
each VM controlled by ISPCONFIG3 and I have DKIM working successful and pass all the test.
The problem is I use Domaintwo to send emails for Domainone.
What I find is Google is complaining that DKIM fails as follows:

Code:

<?xml version="1.0" encoding="UTF-8" ?>
<feedback>
  <report_metadata>
    <org_name>google.com</org_name>
    <email>[email protected]</email>
    <extra_contact_info>https://support.google.com/a/answer/246</extra_contact_info>
    <report_id>57619555555</report_id>
    <date_range>
      <begin>15767868700</begin>
      <end>1576798699</end>
    </date_range>
  </report_metadata>
  <policy_published>
    <domain>domainone.com</domain>
    <adkim>s</adkim>
    <aspf>s</aspf>
    <p>quarantine</p>
    <sp>quarantine</sp>
    <pct>100</pct>
  </policy_published>
  <record>
    <row>
      <source_ip>X.X.X.X</source_ip>
      <count>18</count>
      <policy_evaluated>
        <disposition>none</disposition>
        <dkim>fail</dkim>
        <spf>pass</spf>
      </policy_evaluated>
    </row>
    <identifiers>
      <header_from>domainone.com</header_from>
    </identifiers>
    <auth_results>
      <spf>
        <domain>domainone.com</domain>
        <result>pass</result>
      </spf>
    </auth_results>
  </record>
  <record>
    <row>
      <source_ip>Y.Y.Y.Y</source_ip>
      <count>11</count>
      <policy_evaluated>
        <disposition>none</disposition>
        <dkim>pass</dkim>
        <spf>pass</spf>
      </policy_evaluated>
    </row>
    <identifiers>
      <header_from>domainone.com</header_from>
    </identifiers>
    <auth_results>
      <dkim>
        <domain>domainone.com</domain>
        <result>pass</result>
        <selector>default</selector>
      </dkim>
      <spf>
        <domain>domainone.com</domain>
        <result>pass</result>
      </spf>
    </auth_results>
  </record>
</feedback>

How to fix this issue?
Thanks,

 

Thanks Till for the quick response,
I send from one server to Google but under the name of the other server, i guess that is why there are two SPF and two DKIM records.
Google reports each set of records under the correct IP.
I have added two domain in SPF and they are not complaining anymore but I don't know what to do with DKIM.
Thanks,

 

Every domain has one dkim-record. You can not create multiplie dkim-keys for the same domain.

 

Thanks Florian,
Does it mean there is no solution for this scenario.
The interesting thing is that it is only google who is complaining but not anybody else.
Thanks

 

Actually, I found the following article which is talking about what I need.
https://space.dmarcian.com/how-to-send-dmarc-compliant-email-on-behalf-of-others/
Will go through it and report back.

I fixed the issue by setting up my server to send using SMTP instead of using the PHP application.