How do I configure DKIM?

Here are the steps to a correct DKIM setup:

  1. List all your sending domains.
  2. Install a DKIM package on your email server (see details below)
  3. Create the public and private DKIM key pair.
  4. Publish the public DKIM key.
  5. Hide the private DKIM key.
  6. Configure your email server.
  7. Test your DKIM setup.

How do I set up OpenDKIM?

Setup OpenDKIM

  1. Configure OpenDKIM:
  2. Configure Postfix:
  3. Specify trusted hosts:
  4. Create a key table:
  5. Create a signing table:
  6. Generate the public and private keys:
  7. Change the owner of the private key to opendkim:
  8. Add the public key to the domain’s DNS records.

How do I check my DKIM configuration?

You can check/validate your DKIM record by using our DKIM record Checker.

  1. Enter ‘Google’ as the Selector. As an example, we’re using a generated domain key from Google Apps.
  2. The DKIM record is correctly configured when the DKIM Checker shows ‘This is a valid DKIM key record’.
  3. If the selector is not valid.

How do I add SPF to postfix?

How To Implement SPF In Postfix

  1. 1 Preliminary Note. I assume that you have already set up a working Postfix mail server.
  2. 2 Install Required Perl Modules. The postfix-policyd-spf-perl package depends on the Mail::SPF and the NetAddr::IP Perl modules.
  3. 3 Install postfix-policyd-spf-perl.
  4. 4 Test policyd-spf-perl.
  5. 5 Links.

How do I set SPF and DKIM?

SPF – An SPF record is enabled by default for your domain name in our DNS zone. You can modify it if needed from Site Tools > Email > Authentication. DKIM – By default DKIM should be enabled. To disable DKIM for your domain, go to Site Tools > Email > Authentication > DKIM > Deactivate.

How do you set DKIM and DMARC?

Set up DMARC for outbound mail from Microsoft 365

  1. Step 1: Identify valid sources of mail for your domain.
  2. Step 2: Set up SPF for your domain.
  3. Step 3: Set up DKIM for your custom domain.
  4. Step 4: Form the DMARC TXT record for your domain.

What is DKIM key selector?

What are DKIM Selectors? The DKIM selector is specified in the DKIM-Signature header and indicates where the public key portion of the DKIM keypair exists in DNS. The receiving server uses the DKIM selector to locate and retrieve the public key to verify that the email message is authentic and unaltered.

How can I test my postfix email?

In this step, you’ll test whether Postfix can send emails to an external email account using the mail command, which is part of the mailutils package that was installed in Step 1. To send a test email, type: echo “This is the body of the email” | mail -s “This is the subject line” your_email_address.

Where is my DKIM public key?

You can spot the DKIM selector for your domain as an “s=” tag in your DKIM signature header. It is a string variable that helps in pointing towards the DKIM public key in your domain’s DNS while authenticating your messages using DKIM authentication protocol.

How do I add a DKIM record to DNS?

To add the DKIM record for your domain, follow these steps:

  1. Log in to your GoDaddy account and navigate to Domain Control Center.
  2. Select your domain to access the Domain Settings page.
  3. Under Additional Settings, select Manage DNS.
  4. Select Add under the records table.
  5. Under Type, select TXT.

How do I add DMARC to postfix?

Create a directory to hold the OpenDMARC socket file and change the ownership so that opendmarc user and opendmarc group can access it. Change permission to 750 to restrict access, so users not in group opendmarc can’t access this directory. Add user postfix to group opendmarc . Then restart OpenDMARC.