Advanced settings for DKIM, DMARC, and SPF to avoid the spam folder and achieve a higher open rate

If you truly want to ensure maximum deliverability for all your emails, we recommend making these settings in your DNS:


TypeRecordValue
MXrm.example.com
mail.rulemailer.se(You may also need to add a priority, which should be set to 10.)

TXTrm.example.com
v=spf1 include:_spf.rulemailer.se ~all

CNAMEkeyse._domainkey.example.com
keyse._domainkey.rulemailer.se

CNAMEkeyse._domainkey.rm.example.com
keyse._domainkey.rulemailer.se

TXT_dmarc.rm.example.com


v=DMARC1; p=reject; adkim=s; aspf=r; rf=afrf; pct=100; rua=mailto:dmarc@rule.se; ruf=mailto:authfail@rule.se;



Here is an example of how to input some of the settings in Cloudflare:




Once this is in place, don't forget to validate your settings and email to support@rule.se.


The settings below should be done with your domain provider. If you send email campaigns from multiple domains, follow these steps for each domain.


If you're unsure how to set it up with your specific domain provider, you can contact them for guidance.



Setting up DKIM:


DKIM stands for "DomainKeys Identified Mail" and is an email authentication technique that verifies that a message was sent by a legitimate user of an email address. It is designed to prevent email forgery or spoofing (communication sent from an unknown source disguised as a source known to the recipient).


Rule supports DKIM, and to set it up, you need to add a CNAME.


A Canonical Name record (abbreviated CNAME record) is a type of resource record in the Domain Name System (DNS) that is used to specify that a domain name is an alias for another domain (the canonical domain) in your DNS.


The following should be added:


keyse._domainkey.xxx.se pointing to keyse._domainkey.rulemailer.se


xxx.se=your domain, for example, alright.se


See here:


  1. Click on "Add subdomain" and fill in: Subdomain: keyse._domainkey
  2. Choose CNAME and then Data: keyse._domainkey.rulemailer.se



Setting up DMARC:


DMARC (Domain-based Message Authentication, Reporting, and Conformance) is another way to verify incoming emails by authenticating the sender's domain. DMARC is especially important for emails sent to Outlook/Hotmail.


  1. Log in to your DNS and select the domain name you want to use as the sender.
  2. Click on DNS editor.
  3. Click on "Add Record".
  4. Choose type "TXT".
  5. TTL (Time to live) determines how often the value should be checked in seconds, the standard is 3600, which is perfectly fine.
  6. In the name box, add the following value: _dmarc
  7. In the data box, add the following: v=DMARC1; p=none; rua=mailto:dmarc@rule.se; ruf=mailto:authfail@rule.se




Setting up SPF:


SPF (Sender Policy Framework) is a simple and smart way to increase the chance that the newsletter lands in the recipient's inbox instead of being flagged as spam.


In short, it's a system to enhance email security and prevent others from impersonating you to send emails. With SPF in place, your domain determines who is allowed to use your domain as the sender.


Learn more about what SPF is here.


Domain Name: Organizations' public services (such as email and websites) and individual computers can often be accessed using the domain name.


When you send emails via Rule, you essentially "authorize" our server to send emails on your behalf. For example: newsletter@yourcompany.com


Since the change needs to be made on your domain name, you'll need to log in to your DNS hosting, like Loopia.se that we use in this example. Typically, the IT department internally manages the company's domain and can assist with setting up SPF or verifying that it's correctly configured.


  1. Log in to your DNS and select the domain name you want to use as the sender.
  2. Click on DNS editor.
  3. Click on "Add Record".
  4. Choose type "TXT".
  5. TTL (Time to live) determines how often the value should be checked in seconds, the standard is 3600, which is perfectly fine.
  6. If you also have other mail servers that you use to send emails on your behalf, simply add include:_spf.rulemailer.com to your existing SPF record.



Validate settings and activate your account


Once this is in place, test your settings here and email our support by clicking on the link:


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