Exchange on-prem onlySecurity AdvisoryAn elevation of privilege vulnerability exists in Microsoft Exchange Server. An attacker who successfully exploited this vulnerability could attempt to impersonate any other user of the Exchange server. To exploit the vulnerability, an attacker would need to execute a man-in-the-middle attack to forward an authentication request to a Microsoft Exchange Server, thereby... Continue Reading →

Display Exchange Online mailbox information with Office 365 PowerShell


Exchange online powershell Microsoft online Exchange powershell Microsoft online Exchange powershell Display microsoft Exchange Online mailbox information with Office 365 PowerShell Display Exchange Online mailbox information with Office 365 PowerShell $UserCredential = Get-Credential $Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic –AllowRedirection Import-PSSession $Session Remove-PSSession $Session Display Microsoft Exchange Online mailbox information... Continue Reading →

Alert: Exchange Health Set


Alert: Exchange Health Set Alert: Exchange Health Set Source: pcrs0119 - ActiveSync.Protocol Path: pcrs0119.PGESCo.com;pcrs0119.PGESCo.com Last modified by: System Last modified time: 1/17/2017 8:28:50 AM Alert description: ActiveSync is failing on Mailbox server server name. Incident start time: 1/17/2017 5:28:35 AM  Last failed result: Failing Component - EAS Failure Reason - Unknown Reason: QuotaExceeded  Exception: System.Net.WebException:... Continue Reading →

DSNs and NDRs in Exchange 2013


DSNs and NDRs in Exchange 2013 https://technet.microsoft.com/en-us/library/bb232118(v=exchg.150).aspx Common enhanced status codes The following table contains a list of the enhanced status codes that are returned in NDRs for the most common message delivery failures. Enhanced status code Description Possible cause Additional information 4.3.1 Insufficient system resources An out-of-memory error occurred. A resource problem, such as... Continue Reading →

Grand permission for on prem public folder or shared mailbox to office 365 users


First create universal group and add users to the group the mail enable it With the following command from the exchange PowerShell Enable-DistributionGroup -Identity “groupName” After its enabled Run the following command send on behalf off (run the command from the exchange powershell) Set-MailPublicFolder "\publicfoldername" -GrantSendOnBehalfTo “Groupname” send as For the send as go to... Continue Reading →

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