Email Spoofing

Email spoofing is a common technique used by cybercriminals to send fraudulent emails that appear to come from a trusted source. This practice can put individuals and organizations at risk of falling victim to phishing attacks, malware infections, and other types of cyber threats. To prevent email spoofing, several email authentication protocols such as SPF, DKIM, and DMARC have been developed. These protocols work by verifying the authenticity of the sending domain, checking the content of the email, and enforcing policy-based actions. By implementing these protocols, domain owners can protect their brand reputation, improve email deliverability, and provide a safer email experience for their users.

Script to list The Members of Nested Distribution Groups

Connect to Exchange Online PowerShell $UserCredential = Get-Credential$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri -Credential $UserCredential -Authentication Basic -AllowRedirectionImport-PSSession $Session Get list of all distribution groups $groups = Get-DistributionGroup -ResultSize unlimited Loop through each group and get its members foreach ($group in $groups) {Write-Host "Group: $($group.Name)"$members = Get-DistributionGroupMember -Identity $group.Name -ResultSize unlimitedforeach ($member in $members)... Continue Reading →

Mailbox Calendars Permissions For All Users

Following power shell commands can be used to get a list of all Exchange user's mailbox calendar permissions. Output will list all users along with the users that have permission to their calendars and also permission level. $Mailboxes = (get-mailbox -database dbname) $Mailboxes | ForEach {Get-MailboxFolderPermission -Identity “$($_.alias):\Calendar” | Select User, Identity, AccessRights} You can... Continue Reading →

Email Forwarding Report

Recently, I worked on getting a report of all users who have Email forwarding enabled. Users can have forwarding enabled at their mailbox level and / or mailbox rules. Forwarding Enabled on Mailbox Level: Get-Mailbox -Organizationalunit "OU Path" | where {$_.ForwardingAddress -ne $null} | ft -wrap -autosize Name, ForwardingAddress, DeliverToMailboxAndForward Forwarding Set up using Mailbox... Continue Reading →

Blocked Active Sync Device

I have recently come across an issue where a device status was Blocked. It was Allowed from Exchange Online portal but after refreshing it, it goes back to the Blocked state. I ran the following command on exchange power shell to find out the device ID of the device that was in Blocked status. Make... Continue Reading →

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