Marketing emails not sending due to unexpected SMTP configuration errors

patriciasql
Thu, 19 Jun 2025 08:15:00 +0000

Had this exact issue last month. The problem might not be DKIM at all - check your SMTP credentials in the connected email settings. When you update domain authentication, sometimes the underlying SMTP connection gets reset or credentials expire. Navigate to Settings > Email > Connected emails and verify each sending address still shows “Connected” status. If any show disconnected, you’ll need to re-authenticate those accounts even if DKIM eventually validates.