How do I set up DKIM on G Suite for outgoing mail, especially when using multiple email services?
Summary
What email marketers say10Marketer opinions
Email marketer from Email Geeks explains that DKIM works at the mail server level, using a signing domain's DNS zone to store the public key. They also noted that Google automatically validates inbound DKIM signatures, and on G Suite, outbound signing needs manual configuration.
Email marketer from Email Geeks shares the steps after finding *Authenticate Email* in G Suite including selecting the domain, generating the key, adding the host name and key as a TXT record in the DNS zone file, and clicking “start authenticating”.
Email marketer from Reddit mentions using different DKIM selectors for each service (e.g., Mailgun, SendGrid) when sending emails through multiple platforms. They suggest generating a unique selector for each to avoid conflicts. It's also important to check each service's documentation for setup instructions.
Email marketer from Mailhardener answers the question regarding the DKIM setup procedure for G Suite and suggests the setup involves generating a DKIM record, which needs to be added to your DNS records. Once that's done, you need to turn on the DKIM signing in the admin console.
Email marketer from Email Geeks shares the steps after finding *Authenticate Email* in G Suite including selecting the domain, generating the key, adding the host name and key as a TXT record in the DNS zone file, and clicking “start authenticating”.
Email marketer from Small Business Blog explains that DKIM validates the authenticity of your outgoing email messages, preventing spammers from forging your domain and sending email without your authorization. If you fail to validate your outgoing email messages, spam filters may mark these messages as spam or reject them entirely.
Email marketer from Email Geeks explains that when setting up DKIM with multiple services, it's important to sign with subdomains or use two-part selectors to prevent conflicts. Also, if the plan is to use DMARC, ensure signing with DMARC aligned domains.
Email marketer from StackExchange answers by highlighting the importance of aligning DKIM with DMARC, especially when using multiple email services. Each service should sign emails in a way that passes DMARC checks, otherwise email deliverability can be affected. Ensuring the domain in the 'From' address matches the DKIM signing domain is crucial.
Email marketer from Email Geeks explains that DKIM works at the mail server level, using a signing domain's DNS zone to store the public key. They also noted that Google automatically validates inbound DKIM signatures, and on G Suite, outbound signing needs manual configuration.
Email marketer from Valimail shares information about avoiding the common mistake of using the same DKIM key for all services, which can cause authentication issues. They recommend generating separate DKIM keys for each service to maintain proper email authentication.
What the experts say2Expert opinions
Expert from Email Geeks explains that when setting up DKIM with multiple services, it's important to sign with subdomains or use two-part selectors to prevent conflicts. Also, if the plan is to use DMARC, ensure signing with DMARC aligned domains.
Expert from Word to the Wise, Laura Atkins, explains that a challenge with DKIM setup, especially when using multiple email services, is ensuring that each service has its own unique DKIM key and selector. Overlapping selectors can cause authentication failures and deliverability problems.
What the documentation says6Technical articles
Documentation from Google Support shares details about accessing the admin console of G Suite, navigating to the Email authentication section, generating the DKIM key, and then adding a TXT record to your domain's DNS settings.
Documentation from AuthSMTP explains generating the DKIM key in the G Suite admin console, publishing the TXT record to your DNS settings, and then activating DKIM signing for your domain. It also emphasizes the importance of testing the DKIM setup to ensure it's working correctly.
Documentation from Google Workspace Admin Help explains how DKIM works by adding a DKIM signature to outgoing messages, which receiving servers use to verify the message's authenticity. It is recommended to generate a new DKIM key and update the domain's DNS records with the public key.
Documentation from dmarcian explains that using DKIM selectors allows multiple services to sign email from the same domain without interfering with each other. Each service uses a unique selector, which is part of the DKIM signature and helps the receiving server find the correct public key in DNS.
Documentation from EasyDMARC explains DKIM in G Suite helps prevent email spoofing and phishing attacks. They explain the steps involving generating a DKIM key, adding a TXT record to the domain's DNS, and then enabling DKIM signing.
Documentation from MXToolbox describes how to confirm that the DKIM setup is functioning. It involves using a DKIM record lookup tool to view the DKIM record. Then send a test email, view the header, and check for the presence of the DKIM signature.