For the '''DKIM Domain '''field, this function enables DKIM signatures for emails in order to improve their authenticity. The domain entered needs to match the domain of your SmartSimple server. It is currently limited to the following: smartsimple.ca, smartsimple.com, smartsimple.ie, smartsimple.us. The selector name for any of these will be 'dkim.'
For an alternative to this feature, see [[Email Designated as Spam#Alternative Option: Using SmartSimple's built-in SMTP server|our built-in SMTP server]].
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