You will get good results from our work Germany Educational Industry Email List How to set up Domain Authentication in Zoho Campaigns
The SPF record/DKIM signature/DMARC settings can be configured by your company's domain administrator, or by the email delivery tool or MA tool you are using. For details, please check with your administrator or the tool provider you are using.

From here, we will explain how to set it up using Soho Campaigns, an email delivery tool provided by Soho.
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