Settings for External Domains

Add the following DNS records to your DNS zone if the domain was not registered through Creoline:

SPF Record

To allow our infrastructure to send emails on behalf of your domain, the following DNS record is required to ensure that outgoing emails are not classified as spam by the destination server.

Property	Value
RR Type	TXT
Host:	@
TTL:	3600

Value:

v=spf1 include:_spf.creoline.de -all

If an SPF record already exists for your DNS zone, please only add the "include" mechanism for _spf.creoline.de

DKIM Record

To sign outgoing emails using the DKIM method, the following DNS record is required:

Property	Value
RR Type	TXT
Host:	creoline._domainkey
TTL:	3600

Value:

v=DKIM1; h=sha256; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDR0NpA0A91JTIFCBSzmrQU6T6adwC8IM5KE7jUjclB/H8ipI+/e7AabDmEQ3IM51IAVnZSD/KDh9v/7Y+RKu9XSiH/1lNL5HinWb3zncqeqOPx6eaoKSM1iA9YdsNvW9NOTEwZEM0e7sNjkNsMJMtmgGtrk3GUVSLnGA21k2hjfwIDAQAB

DMARC Record

To additionally enable the DMARC security feature, please add the following DNS record

Property	Value
RR Type	TXT
Host:	_dmarc
TTL:	3600

v=DMARC1; p=reject; rua=mailto:rua.dmarc@creolineserver.de; rf=afrf; adkim=r; aspf=r

The DMARC process may only be enabled if SPF and DKIM have been enabled beforehand.

Verifying the Configured DNS Entries

You can use our Dig tool to verify the previously configured DNS records.

Security Feature	Test URL
SPF	https://help.creoline.com/tools/dig/TXT/creoline.cloud
DKIM	https://help.creoline.com/tools/dig/TXT/creoline._domainkey.creoline.cloud
DMARC	https://help.creoline.com/tools/dig/TXT/_dmarc.creoline.cloud

Once all DNS records have been configured and verified, we also recommend that you send a test email via the website https://appmaildev.com/en/dkim to verify each security feature individually.