We help IT Professionals succeed at work.
Get Started

DKIM Setup

Jason Crawford
on
23 Views
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;
 h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;
 bh=DelGf+gWPEhOvltwPFOouDoJUz05MJ7aNGn/c7H8Dro=;
 b=FF7o+GdJEn3iwuwslLI+FzxA8zlUPoVwwvRHIEbQpIrmOc5tPOtAjKYR6E8OD1ZEqJ7aj7q2Qpw4DZPFm8i5iTg/WLwv9vWBTW/2Z8haVXJ9OuJLCdZ91pLscP36byQPzDJ4QPIoWQlCRqrjwyawoBiz0c5YWAmOp321GU0LLh8=

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 ip4:1.2.3.4 include:spf.protection.outlook.com -all

If email is sent from 1.2.3.4 for mydomain.net will it still pass DKIM?  How do I account for that IP in my DKIM setup?
Comment
Watch Question
EE Solution Guide - Technical Dept Head
CERTIFIED EXPERT
Most Valuable Expert 2020
Most Valuable Expert 2017
Commented:
This problem has been solved!
Unlock 1 Answer and 4 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE