Office 365 Email Security

A key skill for this course is being able to use PowerShell to connect to Office 365 and run the scripts that are provided. This course does not teach you how to do this but this video gives you an overview of what is required.

Reporting on mailbox activities is critical to monitoring for security. This lessons helps you enable all the available mailbox monitoring options to give you more information about what is happening with Exchange Online inside your tenant

Monitoring mailbox is important but once you've done that what actions do you want to be taken? This lesson shows you the best way to configure these options to enhance the security of your environment

Once you have reporting data flowing you want to be able you retain that data for review for a period that suits your needs. This lesson show you how to set this for your environment

Deleted mailbox items are only retained for a limited time with Exchange Online. Ensuring this period is the maximum possible available is important if you ever have the need to recover information from a mailbox. This lesson will show you how to maximize the retention period quickly and easily for all mailboxes in your tenant

If a mailbox is compromised one of the first things an attacker will configure is a forwarder to send email to themselves without the user knowing. Thus, monitoring your environment for unknown forwarding is critical to warn you if your environment has been compromised. This lesson shows you how you can perform these test quickly and easily using a simply script

Many older mailbox protocols are enabled by default in Exchange Online for backwards compatibility. If you don;t require this then these protocols should be disabled to reduce your attack surface area. This lesson shows you how you can ensure that POP3 and IMAP protocols are disabled for your mailboxes

Exchange Online provides spam and malware protection but it is only configured with broad general settings out of the box. This lesson will show you how to change these settings to best practices and improve the security of inbound email to you mailboxes and reduce the amount of inappropriate material users receive in the inbox

The free Message Header Analyzer tool is a tool that can be added to Outlook to allow detailed examination of email headers. This allows you to determine information about how and where the message was delivered from as well as other handy troubleshooting information

This option is available with Office 365 E3, E5 and Exchange Online Plan 2. Litigation hold allows organizations to preserve email of users. When a user’s mailbox is put on Litigation hold, the user can delete items from their mailboxes but the items are retained for access by an administrator.

Litigation hold retains email messages, calendar items, tasks and other mailbox items. Legal hold also protects the original version of each mailbox item from modification by the user. If a user changes the properties of items in a mailbox on litigation hold, a copy of the item before it was changed is retained. Litigation hold doesn’t affect users’ day to day email workflow, so users can continue to modify and delete mailbox items as they normally would. Mail that is retained can be viewed using multi mailbox searches by administrators.

If you want to enable In-Place Archive or put an In-Place Hold or a Litigation Hold on a shared mailbox, then an Exchange Online Plan 2 license or an Exchange Online Plan 1 with Exchange Online Archiving license is required. If you enable In-Place Archive and auto-expanding archiving for a shared mailbox, additional storage is automatically added when the 100 GB storage capacity for the archive mailbox is reached.

DKIM provides a method for validating a domain name identity that is associated with a message through cryptographic

For example, if you have an initial domain of cohovineyardandwinery.onmicrosoft.com, and two custom domains cohovineyard.com and cohowinery.com, you would need to set up two CNAME records for each additional domain, for a total of four CNAME records.

DMARC is a standards based technology to help ensure secure delivery of emails. It is a major way to help prevent spam and spoofing within your domain. This lesson shows you how to configure DMARC with Exchange Online to increase your protection level

Ensuring that email content is kept secure is important for many communications today. This lesson will show you how you can easily configure email encryption inside your existing Office 365 environment