June 13, 2012 Dave Stork Exchange 2010, Load Balancing, Management, Security Leave a comment

Exchange SSL Offloading and the upcoming update blocking certificates with RSA key length less than 1024bit

Reading Time: 2 minutesMicrosoft announced yesterday new approach regarding the validation of certificates coming in august this year. Certificates with a key length less than 1024bit will be blocked: Adding to our defense-in-depth measures, in August, we will release a change to how Windows manages certificates that have RSA keys of less than 1024 bits in length. Once this key length update is released, we will treat all of these certificates as invalid, even if they are currently valid and signed by a

May 29, 2012 Dave Stork Exchange 2010, Management Leave a comment

Update Rollup 3 for Exchange 2010 Service Pack 2

Reading Time: 2 minutesJust today Microsoft released the third rollup for Exchange Server 2010 Service Pack 2. See the announcement here. They specifically call out the following fixes. KB2689810 Meeting Requests bodies get rendered in plain text in Outlook when created via Exchange Web Services. KB2674445 Need the function to check ACL consistency during moving mailbox. KB2700705 RpcClientAccess crashes with SocketException when UDP push notification is enabled. KB2705425 Memory Leak in UMWorkerProcess.exe. KB2698976 MRM Assistant doesnt process a mailbox with a contact created

May 24, 2012 Dave Stork Exchange 2010, Management, Outlook Leave a comment

Managing mailbox storage use in Exchange 2010, Part 1

Reading Time: 4 minutesIt's something most organizations encounter at some point: A mail server with no more space left or user's can't get a higher quota due to limited storage resources. Even with a basic policy regarding mailbox quota's, running out of resources is still something that can happen if the server was not sized properly or upgraded to handle changed conditions (larger quota's, more mailboxes etc.). Most straightforward would be upgrading the storage solution, but there are other options that could be

April 20, 2012 Dave Stork ActiveSync, Exchange 2013, Management, OWA Leave a comment

Exchange 15 OWA Offline and Extensible?

Reading Time: 2 minutesA few hours ago Mary-Jo Foley posted a blog in which she states (among other things not mentioned here) that the next version of Exchange (codename Exchange 15) could get an offline OWA. A requirement would be IE10. Considering Windows 8 tablets, this could be quite the competitor for Microsoft's own ActiveSync (EAS, also incorporated in all versions of Windows 8). It would depend on the functionality while in offline mode; it’s only reasonable to assume functionality is limited when

March 15, 2012 Dave Stork Exchange 2010, Management, Migration/Transition, Office 365, Question of the day Leave a comment

Exchange 2010 calendar publishing URLs are not updated after migrating to Office 365

Reading Time: < 1 minuteWith Exchange 2010 Service Pack 1 it became possible to share your calendar with anyone outside of you organization, depending on the Sharing Policy implemented by your Exchange Administrator. Users can then share their calendar via an obfuscated or an relatively public URL without the need for authentication (and SSL for that matter). For more information on how to prepare your environment if you want to enable it, see this blog post. However, if an user has this enabled on

March 2, 2012 Dave Stork ActiveSync, Exchange 2010, Management, Windows 8/10 Leave a comment

More about Windows 8 CP and ActiveSync

Reading Time: 5 minutesSince yesterday’s blog post “Yes, there is ActiveSync in Windows 8!”, I have fiddled some more with the Windows 8 Mail app. So, which other ActiveSync settings do work within Windows 8? There are quite a few, and some aren’t supported by all devices. So, which are important and could I use as a baseline? Well, Microsoft already made a baseline: Exchange ActiveSync Logo Program The Exchange ActiveSync Logo program was created to easily identify devices which had a certain

February 9, 2012 Dave Stork Exchange 2010, Management, Office 365, Question of the day 2 comments

Send As permission on Office 365 not with Add-ADPermission

Reading Time: < 1 minuteWith an On-Premises Exchange 2010 environment an administrator hands out Send-As permission with the Add-ADPermission cmdlet. But I found out that this doesn’t work in Office 365. In this case a P plan (no Dirsync, Federation or such), you can see the result in the screenshot: Funny thing is that if you try Add-MailboxPermission to add Send-As permission, the error message redirect you to Add-ADPermission. For handing out Send-As permissions (and other rights) in Office 365, you’ll have to use

February 7, 2012 Dave Stork Exchange 2010, Management, Question of the day One comment

Do not move RBAC Role Groups out of the Exchange Security Group OU

Reading Time: 2 minutesExchange 2010 has a massively improved admin permission model. It’s called Role Based Access Control and with it you can use predefined roles or make very customized roles if needed. I won’t go into details how it works, for the purpose of this issue you only need to know that the RBAC roles are assigned via RBAC Role Groups. These are actual Security groups within Active Directory and when assigned a RBAC Role Group within Exchange, the user is a

January 9, 2012 Dave Stork Exchange 2010, Management, Question of the day Leave a comment

Granting Mailbox Full Access via Groups and keeping the Automapping feature in Exchange 2010

Reading Time: 3 minutesSince Exchange 2010 Service Pack 1 a new feature was added for Outlook 2007 and 2010 users, namely Automapping. When a mailbox user has Full Access on another mailbox, it will be automatically mapped in Outlook. No need for the user to go trough menus to find the additional mailbox screen. It’s a small addition but I know that users and your service desk will appreciate this. There is one catch I came across, namely automapping does not work when

January 2, 2012 Dave Stork Exchange 2010, Management, Question of the day Leave a comment

How to confirm a mail has been received in Exchange 2010

Reading Time: 3 minutesRecently I was asked to check whether members of a distribution group were receiving mail sent to the group. In this case the group was a member of another distribution group. First thing is to check if all nested groups are mail-enabled distribution groups. If this is not the case, Exchange will deliver to all recipients except those of this non mail enabled group. So, check all nested groups if it is mail enabled. If you need to seek further

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