10 steps to have better secured email mailbox

Email is today’s essential work tool. It’s hard to imagine life without email. We use it both at work and in our personal lives. However, this fact also poses a threat to us. The number of email-related scams continues to rise, which means that if we don’t take additional steps to secure ourselves, we’ll be at risk.…

External email warning rule – Exchange Online

External email warning rule – Exchange Online
Many companies choose to include in the first line of an email a message indicating that the email comes from an external source. Such a notification might look like this: Adding such a banner at the top of an email serves as a reminder to employees to verify the sender, message content, and attachments. You can customize…

Exchange Online – report of mailboxes size – PowerShell

Having a large number of test mailboxes can benefit from a report that shows the size of all mailboxes. If you want to check an individual mailbox, you can do it with a single command. [crayon-674e14f9cf5a0955238079/] The result of this command will be: What if we have many mailboxes? I've written a script that allows checking the…

Office365 Mailbox conversion – User Mailbox Shared Mailbox

Office365 Mailbox conversion – User Mailbox <-> Shared Mailbox
In a daily work I have needs to convert Ofice365 mailbox between user mailbox and shared mailbox. It could be needed after employee left or if we would need mailbox with ability to mail sending. The first difference between these types is that shared mailbox do not require license for office365. In addition, shared mailbox has limited…

MS Exchange – how to enable basic authentication

MS Exchange – how to enable basic authentication
I guess you met with information that MS will successively disable basic authentication in exchange online. According to information from MS the process of disabling was started 1 of October and since then they disabling below protocols on random tenants. MAPIRPCOffline Address Book (OAB)Exchange Web Services (EWS)POPIMAPExchange ActiveSync (EAS)Remote PowerShell SNMP AUTH will not be modified. Currently,…

Phishing – attack simulation – Exchange

Today post will be about very useful feature in exchange online - Attack Simulation Training. This feature allows to simulate phishing attack on organizational mail accounts. Phishing is most popular type of attack today. Despite that fact very users still is clicking and providing credentials on that attack. Prerequisites To have full functionality of AST you have…

Mass update of distribution list members – Powershell

Mass update of distribution list members – Powershell
Some time ago I had to perform update of one of DLs with all mails from company. I prepared a simple commands and will share it with you. The csv file is the export of emails I want to add. Imported file has 2 columns - surname and email address (primarySmtpAddress). 1st one column is not obligatory…