Category Archives: Office365

Office 365 tenant version

Office 365 tenant must be version 15.0.000.0 or higher for the hybrid deployment to function correctly with Exchange 2013. To verify the version and status of your existing Office 365 tenant, do the following: Connect to the Office 365 tenant … Continue reading

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Office 365 -Exchange 2003 issue – NDR 5.4.6 Routing Loop

I had this problem with one of my office 365  costumers  when i tried to send emails from on premises mailbox to the cloud and got this NDR: Your message did not reach some or all of the intended recipients. … Continue reading

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Office 365 – Error “one of your on-premises Federation service certificates is expiring…”

In order to resolve this issue follow this steps : 1. Open PowerShell and type Get-PSSnapin –Registered Add-PSSnapin Microsoft.Adfs.Powershell Update-AdfsCertificate –Urgent 2. Open Microsoft Online Services Module for Windows PowerShell and type Connect-MsolService(Enter your cloud admin credentials) Update-MsolFederatedDomain –DomainName “your … Continue reading

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Office 365 – Error “one of your on-premises Federation service certificates is expiring…”

In order to resolve this issue follow this steps : 1. Open PowerShell and type Get-PSSnapin –Registered Add-PSSnapin Microsoft.Adfs.Powershell Update-AdfsCertificate –Urgent 2. Open Microsoft Online Services Module for Windows PowerShell and type Connect-MsolService(Enter your cloud admin credentials) Update-MsolFederatedDomain –DomainName “your … Continue reading

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Office 365 – Exchange Online URLs and IP Address Ranges