Mail enabled Public Folders on Exchange 2013 CU6 require action for internet mail to be received

So, CU6 is out. It’s easy to overlook the change mentioned within the Exchange 2013 Release Notes. And you might have missed the Exchange Team blog post about all Public Folder changes with CU6. And it might not be relevant for your situation. But I know certain customers rely on mail enabled Public Folders that are able to receive internet mail and are now on Exchange 2013. Sometimes it’s not practical to change those Public Folders to a Shared Mailbox.

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Released: Exchange 2013 CU6, Exchange 2010 SP3 RU7 and Exchange 2007 SP3 RU14

Today Microsoft released the 6th update to Exchange Server 2013, aptly named Cumulative Update 6 (CU6), the seventh update to Exchange Server 2010 SP3; Rollup Update 7 (RU7) and the 14th update to Exchange Server 2007 SP3 named Rollup Update 14 (RU14). They mostly contain smaller security fixes and/or bug fixes or DST (Daylight Saving Time) updates. Having said that, the most eagerly awaited and important fixes in Exchange Server 2013 CU6 include: Hybrid Configuration Wizard fix for Exchange 2013

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Fixing Office 365 DirSync account matching issues

Recently I had to fix some issues with DirSync. For some reason (there were some cloud users created before DirSync was enabled) there were duplicate users, because DirSync failed to match the already present cloud user and the corresponding AD (Active Directory) user. There were also accounts that failed to sync and thus failed to sync all attributes properly. If there is already a cloud account and there is need for a synced account, you can create an AD account

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Optimizing the Outlook AutoDiscover process by skipping the root domain query

Updated 8/15/2014: see the bottom of this article for additional information on changed AutoDiscover behavior of Outlook 2013. Consider the following scenario: An Active Directory (AD) domain named equal to the SMTP Suffx, so the mailaddress dmstork@contoso.com in the contoso.com AD domain. No on-premises Exchange, this means that there is no Service Connection Point (SCP) in A. Outlook 2013 (or lower versions from Outlook 2007 up). Exchange Online (or any hosted Exchange for that matter). Additional issue: You’ve got an external

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Managing Mailbox quota’s: databases with different settings?

So, a while back I discussed an on-premises Exchange design for a customer. When discussing database distribution in an Exchange 2013 Database Availability Group (DAG), the topic of mailbox quota’s came along. They insisted on having different Database (DB) level quota’s and move mailboxes to other databases when the user requires more storage space. It’s a tactic I have seen before, especially during Exchange 2003 (Enterprise edition) and Exchange 2007. I can understand why organization adopt this practice, it’s easy

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Exchange mail flow not working? Check your (Cisco) firewall!

I’ve come across this issue several times: External mail (or mail between Exchange servers) cannot be delivered, however when you check with telnet the Exchange server(s) are responding. When you check via telnet on the external IP you get something similar: In this case it was a Cisco ASA firewall that had (E)SMTP filtering feature (also called Mailguard) enabled, which is the default setting. Unfortunately, this feature filters very strict and blocks extended commands that are allowed by RFC5321 which

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I am now an Exchange MVP!

For those who weren’t following me on Twitter (or Facebook or whatever), today I received an important mail: Dear Dave Stork, Congratulations! We are pleased to present you with the 2014 Microsoft® MVP Award! This award is given to exceptional technical community leaders who actively share their high quality, real world expertise with others. We appreciate your outstanding contributions in Exchange Server technical communities during the past year. After checking headers for spoofing etc. (hey! It’s my expertise after all

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Legacy Public Folders to Exchange 2013 migration tips

A couple of weeks ago I performed a Public Folder migration from Exchange 2007 (aka legacy) towards the modern Public Folders of Exchange 2013. As you may know, the traditional migration method using Public Folder replica's isn't available due to a radical redesign of the Public Folder architecture. Instead of dedicated databases, the hierarchy and data are now stored in mailboxes. The biggest benefit is that Public Folders can now be protected via a Database Availability Group, the downside is

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Office 365 users can't see free/busy of on-premises users

The past few days I was working on making an on-prem Exchange Server 2013 SP1 environment hybrid with the Office 365 tenant. You would expect that running the Hybrid Configuration Wizard (HCW) would be it, after setting all the requirements as they should. Unfortunately after running the HCW, Office 365 mailboxes couldn't access free/busy information of on-prem mailboxes. The other way round was functional. Enter troubleshooting mode! I will spare you the whole story and summarize it to the basics.

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From open source groupware solution Zarafa to Exchange: Part 2, Active Directory

See also Part 1: A New Beginning When using Zarafa there are several possible directory services you can use for authentication. I will restrict this post to situations relevant to Active Directory (AD) integration. Even if you did not use Active Directory (or Zarafa for that matter) previously, I believe this post still contains valuable information. Getting to know your current environment is key if you want to change it. If you migrate from one version of a product to

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