Category: Exchange Server 2007

Exchange 2010 – Enable External Automatic Replies

By default, Exchange 2010 doesn’t allow sending automatic forwards, replies and Out of Office Assistant Messages (OOF) to external email addresses. This is mainly for security and performance reasons, as it ensures there can’t be any mail loops or that Exchange doesn’t automatically reply to any spam messages. With this in mind, you may need […]

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Exchange 2010 – Allow external senders to use distribution list

By default when you create a distribution group (also known as a distribution list) external email addresses are unable to send emails to the group. To allow external email addresses to use the group you will need to disable the ‘Require that all senders are authenticated’ option. Please note, this may open your server and […]

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Exchange 2010 – Cannot login after mailbox has been disabled and attached to different AD user account

I was asked to rename an Exchange account (sitting on an Exchange 2010 SP2 server) for a customer today because the surname had changed so to do this tidily, I disabled the Exchange Mailbox, cleaned up the Databases to make the mailbox appear in the Detached Mailboxes folder using the following Exchange Management Shell command: […]

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Exchange Best Practices: Mailbox Storage Quotas

The trend for Exchange Server in recent years is towards larger mailboxes. Email is a heavily used application, users are demanding more storage for their email, and current versions of Exchange Server have been engineered to provide large mailboxes without requiring expensive, high performance storage subsystems to store it all. All of that does not […]

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A Sender Policy Framework (SPF) Primer for Exchange Administrators

Email spam continues to be a huge problem for organizations these days, and it usually falls on the Exchange administrator to do something about it. Aside from the usual anti-spam measures we can put in place to protect our own servers from spam, we also need to consider how to prevent spammers from spoofing (imitating) […]

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Microsoft Exchange Action Could Not be Performed on User

When deleting a mailbox from Microsoft Exchange Server, the following error is sometimes displayed, especially if the user has been an Exchange Administrator: Microsoft Exchange Error – Action Remove could not be performed on object ‘User’ Error: Active Directory operation Failed on User. This error is not retriable. Additional inFormation: Access is denied. Active directory […]

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Allow Exchange relay emails from certain IP addresses

In general, we always try and keep our mail servers as secure as possible, and only allow relaying to trusted/authenticated users. This is in order to avoid our servers being used for spamming and subsequently blacklisted, which can cause delivery issues and headaches if it happens. However, there are occasional scenarios, where we may need […]

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Find The Total Number Of Mailboxes In Your Organization

How can you quickly find the total number of mailboxes in your organization? You can do it now by running a shell command. Get-Mailbox | Measure-Object You can further customize the command to your  requirements. Let’s say that you want to find out the mailboxes in one particular database or one particular server. You can […]

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Finding Users Who Have Email Forwarding Enabled Using Shell

At times we run into a situation where we need to find out who all have email forwarding enabled and to which address. It is easy to complete this task using the Exchange Shell. Run the following command. Get-Mailbox | Where-Object { $_.ForwardingAddress –ne $null } | Select Name, ForwardingAddress

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