Connect to Office 365 – PowerShell
Office 365 is a service oriented infrastructure and you will have multiple management interfaces based on the services you choose to activate and use. In this post we will focus …
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The Operation on Mailbox Failed Because It’s Out of the Current User’s Write Scope
When you try to update certain attributes on your Office 365 user object you become victim of the following error message: It can happen in the Microsoft Office 365 Admin …
IdFix TopLevelDomain Error
In order to make a successful migration to Office 365 you need to resolve any issues with your Active Directory data. Microsoft has created the tool IdFix to help you …
IdFix Duplicate Error
In order to make a successful migration to Office 365 you need to resolve any issues with your Active Directory data. Microsoft has created the tool IdFix to help you …
Office 365 Licenses and PowerShell
This post will show you how to use PowerShell to get a firm grip on all your Office 365 Licenses. You will learn to easily find the answers to questions …
Office 365 Administration Schizophrenia – and How to Avoid It
Schizophrenia is a mental disorder characterized by Wikipedia as “abnormal behavior, strange speech, and a decreased ability to understand reality”. Now, why did I associate to this serious mental illness …
Set-Mailbox -Type Shared
At some point you may want to convert a user mailbox to a shared mailbox. Perhaps as part of your Office 365 mailbox life cycle management when a user leaves …
What is SPF (Sender Policy Framework)
SPF is an email authentication mechanism designed to fight email spoofing and phishing attacks (to understand phishing attacks please refer to this post). SPF is defined in RFC 7208. The …
What is DKIM (DomainKeys Identified Mail)?
DKIM, or DomainKeys Identified Mail, is a protocol used to authenticate email in order to combat mail spoofing and phishing attacks. For a more detailed description of phishing attacks please …
RFC 5321 and RFC 5322
It’s important to have a basic understanding of RFC 5321 and RFC 5322 to fully understand DMARC, DKIM and SPF. These two RFC’s describe different types of sender information and …