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Posted on Brian ReidLeave a commentPosted in DNS, error, Exchange Server

There are a few articles online about this error, but none were correct for the scenario i found a clients network in. Not that I think the specifics matter, but this was Exchange Server 2016, Windows Domain Controllers running 2012 R2 and Exchange Hybrid. All the mailboxes had already moved to the cloud and the Exchange Server is used for attribute management and SMTP relay. Sometimes, randomly it would seem, the applications fail to send […]

Token2 Hardware OAuth Tokens and Azure AD Access

Posted on Brian ReidLeave a commentPosted in active directory, Azure Active Directory, Azure AD, AzureAD, MFA, multi-factor auth, phone factor, token2

This blog post walks through the process of logging into Azure AD resources (Office 365, other SaaS applications registered in Azure AD and on-premises applications that utilise Azure AD App Proxy). First step is to order your desired hardware. For this article we are looking at the devices manufactured by Token2 (www.token2.com). These include credit card style and dongle type devices. The options are available at https://www.token2.com/site/page/product-comparison For the purposes of this blog post I […]

Read Only And Attachment Download Restrictions in Exchange Online

Posted on Brian ReidLeave a commentPosted in Azure Active Directory, Azure AD, download, exchange, exchange online

Microsoft have release a tiny update to Exchange Online that has massive implications. I say tiny in that it take like 30 seconds to implement this (ok, may 60 seconds then). When this is enabled, and below I will describe a simple configuration for this, your users when using Outlook Web Access on a computer that is not compliant with a conditional access rule in Azure AD, will result in OWA that is read only […]

Public Folder Migrations and the Changing Cmdlets

Posted on Brian Reid1 CommentPosted in exchange, exchange online, Exchange Server, migration, Public Folders

To complete a public folder migration from Exchange 2013/2016 to Exchange Online you need to run Set-OrganizationConfig -PublicFolderMailboxesLockedForNewConnections $true But if you look at lots of the documentation that is out there with their tips and tricks etc. you will see that lots of them say: Set-OrganizationConfig –PublicFoldersLockedForMigration $true So very near – but its the wrong cmdlet now and it does nothing. It does not lock out the public folders and in the cloud […]

Test Connectivity Website and TLS 1.2

Posted on Brian ReidLeave a commentPosted in certificates, exchange online, Exchange Server, Kemp, SSL

An excellent resource for Microsoft Exchange Server and Exchange Online administrators and consultants is the Remote Test Connectivity website at http://exrca.com or https://testconnectivity.microsoft.com/. Here I am going to document an error that indicated that the Exchange Server (in this case) was not working, but we could see that the phone was connecting fine to the server. The error we say was: “The certificate couldn’t be validated because SSL negotiation wasn’t successful. This could have occurred […]

Public Folder Sync–Duplicate Name Error

Posted on Brian ReidLeave a commentPosted in AADConnect, exchange, exchange online, Exchange Server, migration, Office 365, Public Folders

I came across this error with a client today and did not find it documented anywhere – so here it is! When running the Public Folder sync script Sync-ModernMailPublicFolders.ps1 which is part of the process of preparing your Exchange Online environment for a public folder migration, you see the following error message: UpdateMailEnabledPublicFolder : Active Directory operation failed on O365SERVERNAME.)365DATACENTER.PROD.OUTLOOK.COM. The object ‘CN=PublicFolderName,OU=tenant.onmicrosoft.com,OU=Microsoft Exchange Hosted Organizations,DC=)365DATACENTER,DC=PROD,DC=OUTLOOK,DC=COM’ already exists. At C:\ExchangeScripts\pfToO365\Sync-ModernMailPublicFolders.ps1:746 char:9 +         UpdateMailEnabledPublicFolder $folderPair.Local $folderPair.Remote; […]

Configuring Multi Factor Authentication For Office 365

Posted on Brian Reid2 CommentsPosted in MFA, Office 365

Given that Office 365 is a user service, the enabling of multi-factor authentication is very much as admin driven action – that is the administrators decide that the users should have it, or that it is is configured via Conditional Access when limiting the login for the user to certain applications and locations. For a more security conscious user, enabling it themselves if harder! To do this, follow these steps: Go to My Apps – […]

SSL Inspection and Office 365

Posted on Brian ReidLeave a commentPosted in Azure, Azure Information Protection, cloud, firewall, Office 365, proxy, SSL

Lots of cloud endpoint URL’s break service flow if you enable SSL Inspection on the network devices between your client and the service. My most recent example of this Enterprise State Routing in Windows 10. Microsoft have a list of URLs for the endpoints to their service, where they are categorised as Default, Allow or Optimize. The URLs that are Allow or Optimize should avoid SSL inspection. The endpoint list is found at https://support.office.com/en-us/article/managing-office-365-endpoints-99cab9d4-ef59-4207-9f2b-3728eb46bf9a#webservice and […]

Improving Password Security In the Cloud and On-Premises

Posted on Brian Reid1 CommentPosted in active directory, Azure Active Directory, Azure AD, AzureAD, EM+S, enterprise mobility + security, microsoft, Office 365, password, security

Passwords are well known to be generally insecure the way users create them. They don’t like “complex” passwords such as p9Y8Li!uk%al and so if they are forced to create a “complex” password due to a policy in say Active Directory, or because their password has expired and they need to generate a new one, they will go for something that is easy to remember and matches the “complexity” rules required by their IT department. This […]

Azure Information Protection and SSL Inspection

Posted on Brian ReidLeave a commentPosted in aadrm, Azure Information Protection, certificates, exchange, exchange online, IRM, Office, Office 365, rms, SSL

I came across this issue the other day, so thought I would add it to my blog. We were trying to get Azure Information Protection operating in a client, and all we could see when checking the download of the templates in File > Info inside an Office application was the following: The sequence of events was File > Info, click Set Permissions. You get the “Connect to Rights Management Servers and get templates” menu […]

CannotEnterFinalizationTransientException On Exchange Move Request

Posted on Brian ReidLeave a commentPosted in error, exchange, exchange online, Exchange Server, migration, move

Did not find a lot on the internet on this particular error, so I guess it does not happen very often, but in my case it delayed to move of the mailbox in question by a week or so until I could resolve it. When a mailbox is moving to a different Exchange organization (cross-forest or to/from Exchange Online) the move process copies the mailbox data to the target database and then right at the […]

Exchange Server Object ID Error With Windows Server 2016 Domain Controllers

Posted on Brian Reid1 CommentPosted in 2010, 2013, 2016, active directory, ADDS, error, Exchange Server

Saw this error the other day: When you open Exchange Control Panel and view the Mailbox Delegation tab of any user account you get the following: The object <name> has been corrupted, and it’s in an inconsistent state. The following validation errors happened: The access control entry defines the ObjectType ‘9b026da6-0d3c-465c-8bee-5199d7165cba’ that can’t be resolved.. You do not see this error on any mailboxes that you have moved to Office 365 in hybrid mode, that […]

Copy Links and Backlinks Between Users and Shared Mailboxes (automapping)

Posted on Brian Reid1 CommentPosted in cross-forest, Exchange Server, mailbox, migration, msExchDelegateListBL, msExchDelegateListLink, shared mailbox

Automap for shared mailboxes does not work across forests when moving mailboxes. When the user is granted permission to a shared mailbox, the default behaviour of automapping means that the shared mailbox has msExchDelegateListLink set to the DN of the user, and the backlink (hidden in AD by default) on the user is populated with the DN of the shared mailbox. Whenever the link attribute is updated, the backlink is automatically updated as well. For […]

Anonymous Emails Between On-Premises and Exchange Online

Posted on Brian Reid1 CommentPosted in Authentication, EOP, exchange, exchange online, Exchange Online Protection, Exchange Server, hybrid, smtp, spam

When you set up Exchange Hybrid, it should configure your Exchange organizations (both on-premises and cloud) to support the fact that an email from a person in one of the organizations should appear as internal to a recipient in the other organization. In Outlook that means you will see “Display Name” at the top of the message and not “Display Name” <email address>. An email from the internet is rightly treated as anonymous and so […]

Azure AD Single Sign-On Basic Auth Popup

Posted on Brian ReidLeave a commentPosted in AADConnect, AADSync, Azure Active Directory, Azure AD, AzureAD, conditional access, microsoft, modern authentication, SSO

When configuring Azure AD SSO as part of Pass-Through Authentication (PTA) or with Password Hash Authentication (PHA) you need now (since March 2018) to only configure a single URL in the Intranet Zone in Windows. That URL is https://autologon.microsoftazuread-sso.com and this can be rolled out as a registry preference via Group Policy. Before March 2018 there was a second URL that was needed in the intranet zone, but that is no longer required (see notes). […]