Exchange 2016 CU13 introduced a few more fixes and is advisable to upgrade to it. The upgrades are generally seemless and we normally do them from command line, just easier than a GUI upgrade 🙂 Firstly, you need to ensure the following is done before hand: Reboot your system (a general rule of thumb before […]
Ever reboot your servers and when you login, all looks good on the surface but when you try and do stuff well it doesn’t actually work? In this scenario exactly that. Running coexistence with Exchange 2016 and 2019 and after a reboot, all seemed good. Exchange Management Shell launched fine but the Exchange Admin Center […]
Head over to my page on Experts Exchange to view the article in detail: https://www.experts-exchange.com/articles/33593/Installing-Exchange-2016-and-Exchange-2019-into-the-same-environment.html
Running the command Get-MailboxDatabaseCopyStatus * on an Exchange 2010 Server that has Exchange 2016 in the environment, returns all the database copies for every version but today Exchange 2010 gave a weird error: A server-side administrative operation has failed. Operation failed with message: Error 0xe0434f4d (Unknown error …. This is what you get in the […]
In Exchange, the above event seems to log from what we have picked up when working in the Exchange Management Shell, however we cannot find what is triggering it or what the fix is. We have not only seen it here but also on Exchange 2013 and 2019. A query was sent to Microsoft a […]
In Exchange 2019 but in any version, you cannot mix Exchange versions so they are part of the same DAG. For example, you cannot add an Exchange 2013 server to a 2016 DAG. I though I would test Exchange 2019 to make sure we don’t have a bug like in Exchange 2016 but it seems […]
In my Exchange lab I have been experimenting with Cipher Suite lock down and closing holes in SSL. Here are a list of items that we went through: IIS Crypto check and configure. SSL Labs website check. SSL Certificate check and validations. Strict Transport Security – IIS Firstly, I downloaded IIS Crypto 2.0 from Nartac […]
Strange one in Exchange 2016. A Mailbox server was running for a while at a customer, tried to add the server to a DAG but it just failed. Decided to check a few things and on the Exchange Admin Center (EAC) I noticed it said no roles on the server in question. Launched the Exchange […]
As an Exchange Admin, you have deployed Exchange 2016 in your environment. The time comes for testing and you find that you are unable to setup an IMAP account as it fails when trying to send the email on the final step: “The account ‘Domain\Account’ provided valid credentials, but it does not have submit permissions […]
In any Exchange organization, it is common to add and remove mailbox databases, especially the default ones Exchange creates with the install. Generally when you want to remove a mailbox database you would need to move any mailboxes, arbitration mailboxes, archive mailboxes, plans, etc. however in Exchange 2016 there is one more. If you try […]