Entries by Elliot Munro

Outlook for Windows: Shared calendar improvements

Outlook for Windows: Shared calendar improvements Microsoft have updated the Office 365 roadmap with some upcoming improvements to calendar sharing in Office 365. Apart from being simpler, these new calendar updates are also great for separate companies who use Office 365 and share resources like meeting rooms. The current external sharing options are difficult to […]

,

Increase all Office 365 E3 mailboxes to 100 GB via PowerShell

Increase all Office 365 E3 mailboxes to 100 GB via PowerShell Back in 2016, Microsoft announced that they were increasing the maximum mailbox size for certain Office 365 licenses from 50GB to 100GB. For most mailboxes, this increase took place automatically. We had an issue this week where a user on the Office 365 E3 […]

Which Australian businesses are affected by the Notifiable Data Breaches scheme?

The recently implemented Notifiable Data Breaches scheme imposes an obligation for entities to notify individuals whose personal information was exposed in a data breach if they’re at risk of serious harm. If you don’t comply with the requirements of the scheme, the penalties can be quite severe. The Office of the Australian Information Commissioner can impose […]

,

Find external forwarding mailboxes in Office 365 with PowerShell

Find external forwarding mailboxes in Office 365 with PowerShell This is the single Office 365 tenant version of this script. It checks all Office 365 mailboxes for external forwarding addresses. External forwarders are commonly used by hackers and bad actors to exfiltrate data from an organisation. How to find external forwards on Office 365 mailboxes […]

,

Find external forwarding mailboxes in all Office 365 customer tenants with PowerShell

Find external forwarding mailboxes in all Office 365 customer tenants with PowerShell   Hackers and rogue employees can set Office 365 accounts to automatically forward all received email outside of the company. If you’re looking after the security of a number of Office 365 tenants as a Microsoft Partner, it can be difficult to find […]

,

Monitor External Mailbox Forwards in all Office 365 Customer tenants

Monitor External Mailbox Forwards in all Office 365 Customer tenants It’s common for hackers and bad actors to set up an external email forwarder on an Office 365 account they have gained access to. We’ve come across this action on almost every account breach we’ve investigated, and have implemented this monitoring solution to help identify […]

,

Give an Office 365 user access to all calendars via PowerShell

Give an Office 365 user access to all calendars via PowerShell There are many occasions, especially in small businesses, where it’s easier to give a certain user access to all calendars rather than setting permissions on each one. The following script will add permissions on all Office 365 user calendars for the specified user. The […]

Resolve Winmail.Dat Attachment Issue for all Office 365 Customer Tenants

Resolve Winmail.Dat Attachment Issue for all Office 365 Customer Tenants The issue with Winmail.dat attachments is something that comes up pretty often for Office 365 admins. Fortunately, it’s pretty simple to resolve (See our guide here to fix it for a single Office 365 tenant). Unfortunately, you’ll need to configure it on every tenant that […]