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DKIM Setup

Jason Crawford
Last Modified: 2020-05-28
I have setup DKIM for my custom domain in Exchange Online and it shows pass when sending a test email and inspecting the headers:

ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass
 smtp.mailfrom=mydomain.net; dmarc=pass action=none
 header.from=mydomain.net; dkim=pass header.d=mydomain.net; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=mydomain.onmicrosoft.com; s=selector2-mydomain-onmicrosoft-com;

My question is this, I have an application sending email as mydomain.net using IIS SMTP and I have accounted for this IP in my SPF record so it looks something like this:

v=spf1 ip4: include:spf.protection.outlook.com -all

If email is sent from for mydomain.net will it still pass DKIM?  How do I account for that IP in my DKIM setup?
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