This setting is for SmarterMail customers. The setting won't work for people who use Google or other mail systems.
Setting up DomainKeys (DKIM) can help prevent email spoofing of your domain. Also it's helpful to deliver mail so it doesn't get flagged as spam.
Part 1: Generate the DKIM Key in SmarterMail
- Log into SmarterMail using a Domain Administrator account.
- Go to Settings – Domain Settings – General.
- Scroll down to the Email Signing card.
- Click “Enable DKIM signing”.
- Set the Key Size to 2048 (Recommended).
- Leave the Activation setting set to Wait for DNS verification.
- Copy the TXT Record Name and TXT Record Value. You will need these for your DNS manager.
- Click Save.
Part 2: Add the TXT Record to Your DNS
1. Log into the control panel of your DNS Hosting Provider.
2. Navigate to your domain's DNS Management / Zone Records page.
3. Add a new record with the following settings:
- Record Type: TXT
- Name / Host: Paste the TXT Record Name copied from SmarterMail (e.g.,
12345678._domainkey). - Value / Content: Paste the full TXT Record Value string generated by SmarterMail.
- TTL: Standard / Default (or
3600 / 1 Hour).
4. Save the DNS record.
Important Note on DNS Propagation:
Once you save the DNS record, it can take anywhere from a few minutes up to 24–48 hours for DNS changes to update across the internet. SmarterMail will automatically detect the record and activate DKIM signing once propagation completes.
Article ID: 547, Created: 4/28/2016 at 3:04 PM, Modified: 7/30/2026 at 2:22 PM