Microsoft 365 Messaging Admin Exchange Online Course w/ SIMS (Udemy.com)
Learn how to expertly administer Exchange Online through Microsoft 365 with lecture & hands on simulations 24/7
Created by: John Christopher
Last updated February 2026
What you will learn
- Learn the concepts and perform hands on lab activities needed to pass the MS-203 exam and gain a huge amount of knowledge involving Exchange for real world use!
- Gain a tremendous amount of knowledge involving Microsoft Exchange Online
- Get loads of hands on experience with Microsoft Exchange Online
- Utilize hands on simulations that can be access anytime, anywhere!
How it compares
Against the other 459 rated Udemy courses in Office Productivity on CourseDuck:
- Rating4.6 out of 5higher than 67% of them
- Reviews4,735#42 of 460 by number of reviews
- Length8.9 hourslonger than 77% of them
- Last updatedFebruary 2026more recently than 65% of them
Course Description
This course is way more then the average training course on Udemy! Have access to the following:
Training from a Microsoft Certified Trainer of over 20 years who has helped thousands on their certification journey
Lecture that explains the concepts in an easy to learn method for someone that is just starting out with this material
Instructor led hands on that can be followed even if you have little to no experience
TOPICS COVERED INCLUDING HANDS ON LECTURE AND PRACTICE TUTORIALS:
Introduction
Welcome to the course
Understanding the Microsoft Environment
Foundations of Active Directory Domains
Foundations of RAS, DMZ, and Virtualization
Foundations of the Microsoft Cloud Services
DONT SKIP: The first thing to know about Microsoft cloud services
Questions for John Christopher
Performing hands on activities
IMPORTANT Using Assignments in the course
Creating a free Microsoft 365 Account
Manage organizational and client access settings in Exchange Online
Understanding the global address list (GAL)
Manage a global address list (GAL)
Understanding offline address books (OABs)
Add or remove an offline address book (OAB)
Manage address book policies
Plan and configure organization relationships and individual sharing
Configure Outlook on the web policies
Manage recipients and resources
Understanding recipients and resources
Manage user mailboxes
Manage resource mailboxes
Manage shared mailboxes
Create and manage mail contacts and mail users
Manage groups, including distribution lists, Microsoft 365 groups, & more
Manage mailbox permissions, including delegation
Manage mailbox mail flow settings
Create and manage public folders
Manage Exchange hybrid settings and migration
Concepts of virtual directories and URLs for Hybrid Exchange configuration
Hybrid Migrations using the Exchange Admin Center in Exchange Online
Exchange Hybrid Migration Types including cross-tenant migration batch
Maintain and expand the configuration by using the Hybrid Configuration wizard
Manage and secure mail flow
Plan and configure connectors
Plan and implement mail flow rules (transport rules)
Manage accepted and remote domains as well as understanding namespaces with DNS
Understanding Exchange Online Protection (EOP)
Concepts of Email authentication, SPF, DKIM, and DMARC
Implement email authentication, including SPF, DKIM, and DMARC
Troubleshoot mail flow
Configure and manage alert policies
Trace a message and analyze a message trace
Analyze message headers
Analyze non-delivery reports (NDRs)
Troubleshoot by using the Microsoft Remote Connectivity Analyzer
Manage role-based permissions in Exchange Online
Plan and manage RBAC roles
Manage default and custom admin role groups
Using PowerShell to search for RBAC information
Understanding the use of Privileged Identity Management (PIM) with RBAC
Using PIM to manage role-based access control in Azure
Activating a PIM role as a user
Using administrative units to help with controlling access
Manage user roles
Secure messages by using Microsoft 365 Defender
Understanding Microsoft 365 Defender for Office 365
A quick note about these next videos
Configure and manage anti-phishing policies
Configure and manage anti-spam policies
Configure and manage anti-malware policies
Configure and manage Safe Attachments
Configure and manage Safe Links
Configure and manage quarantine policies
Manage compliance
Configure Messaging Records Management (MRM) retention for a specific mailbox
Configure retention policies for Microsoft365 services including Exchange Online
Configure retention policies using Microsoft365 for a specific mailbox folder
Enable and configure archive mailboxes
Manage inactive mailboxes
Analyze audit logs
Manage journal rules
Introduction to content search and eDiscovery
Manage content search
Manage standard eDiscovery cases
Instructor Details
- 4.6 Rating
4,735 Reviews
John Christopher
John Christopher is a Technical Instructor that has been in the business for 25 years. His first experience with information technology occurred in the early 90s when he ran an MS-DOS based BBS(Bulletin Board System) as a System Operator. In the late 90s, after working with Windows NT 3.50 performing backups for Regal Group, he decided to get Windows NT Microsoft Certified.
In 1998 he got his first Microsoft Certified Systems Engineer and Microsoft Certified Trainer certification. Shortly after getting certified, he began working as a Junior Administrator and Instructor for Knowledge Alliance. From there John was able to become one of the first people in the world to gain an MCSE for the Windows 2000 operating system and he began teaching full time for a company called Productivity Point International. At Productivity Point, John got Citrix Metaframe certified and began teaching Citrix along with Microsoft classes. Productivity Point began experiencing financial troubles and John moved on to work with another training company in 2001
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Reviews
By Heshmatullah Hajizadeh on 1/31/2024
great content and great explanation. I have purchased several course from this trainer and I think it was a good investment. thanks a lot, but I have never received any voucher or discount code.
By Gareth Patrick Du Plessis on 4/7/2023
This might sound ridiculous but I really enjoy the way John speaks and explains things. He managed to keep my attention and this really helped me not only complete the course but learn a lot along the way. I have since also subscribed to more of his courses and look forward to completing those too.
By J Watt on 9/13/2022
Excellent course John very well presented and explained. Has to be one of the best course I have viewed on Udemy so far. Looking forward to viewing the other courses I have purchased from this instructor.
By Manuel Andrade on 8/17/2022
Goes well so far! I have great expectations about it I already finished it very helpful, despite I'm a Spanish speaker I was able to understand very well, it's a lot of information so I will have to review it a couple more times.
By Andy Cheung on 6/10/2022
I noticed that the mouse pointer does not point to the location when doing some of the demos which makes me confused. Also, I suggest that some of the demos don't zoom in cos it would distract some students like me, not focusing on the whole picture.
By Dwarakesh Vijayaragavan on 12/12/2021
The is one of the best course I found in udemy, the instructor is very knowledgeable and he breaks down complex things into a cup of cake for everyone to have and share. Thank you again.
By Rohan Aggarwal on 10/16/2021
Most detailed and easy to understand content. I have taken training sessions from many places. if some who have 1 years of exchange experience and want to explore more, i think this is one. Thank Mr. Trainer. God bless.
By Nicholas Socha on 10/13/2021
Very good course for an overall learning and understanding. But if looking to take test with just this course - you will fail. Teacher kept me engaged and really liked the course but needed to eliminate the end of chapter walk throughs - should replace with questions.
By Anonymized User on 1/1/2021
Very Clear and Lucid, although i feel that the course in itself might not be enough to clear the MS-203 exam. Taking nothing away from the content though! Would have been great if the stock OS magnifier tool is replaced with something else more effective.
By Mohamed Alryah on 12/13/2020
so far so good, hop it continue with the same quality, appreciate your effort to put things together!
By Chintalakara Gowtham on 12/13/2020
Your teaching skills are amazing :)
By RaJon Taylor on 12/6/2020
I just finished an Exchange 2016 install with a vendor and I wanted to understand it. This has explained many of the actions I performed. Also the explanation of Azure as IaaS, and Microsoft 365 as PaaS/SaaS put a lot into perspective as I embark on learning these things more deeply.
Quality Score
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Overall Score : 92 / 100












