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Tag: Security

Create a new safe attachment policy in Office 365

Create a new safe attachment policy in Office 365 Let’s look at how to create a safe attachment policy in Office 365 using Advance Thread Protection (ATP). To get started navigate to Microsoft 365 Security & Compliance Center. Sign in using your admin account credentials. From the Security and Compliance Center scroll down and click…

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User receive the following NDR trying to send email from Exchange Online: 550 5.1.8 Access denied, bad outbound sender.

User receive the following NDR trying to send email from Exchange Online: 550 5.1.8 Access denied, bad outbound sender. If you receive the following error, then it means that your account has been sending out too much spam and has been blocked from sending emails. Typically, this problem occurs because the users account has been…

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