Configuration

Block direct delivery to @onmicrosoft.com addresses in a hybrid environment

UPDATE: [11/20/2018] I had an error in the transport rule configuration in the last example, as well as a note that a TR would NDR external traffic.  I have this post accordingly.

We’re all familiar with how Office 365 tenants work–when you spin up a new Office 365 tenant, you get a managed domain (tenant.onmicrosoft.com). … [ Continue reading ]

Migrating

Migrating Hybrid Public Folders to Office 365

Update: Shameless plug: I’ve written more extensively about public folder migrations from both the 2007/2010 and 2013/2016 perspectives in the book, “Office 365 Administration: Inside Out,” available at http://aka.ms/thebookonit.

So, tonight I started the last phase of one of my longest-running projects since joining Microsoft–an Exchange Online migration for a school district that I began nearly a year and a half ago. … [ Continue reading ]

Configuration

Migrating EOP Settings Between Tenants

I find myself currently writing tools to both support my and other organization projects, as well as looking for ways to refine existing tools and scripts, make my life easier for future migrations, and provide additional resources to the community to help other customers more successfully use our products.… [ Continue reading ]

Configuration

Export and Import Calendar Processing Information

During my current project, it became necessary to capture additional calendar processing parameters that are not preserved during a normal hybrid move–such as booking policies.

Some of the challenges that I faced with this tool:

  • Blank or unpopulated attributes
  • Conversion of sAMAccountName values to PrimarySmtpAddress
  • Multiline attributes with special characters
  • Attributes that were set for the wrong recipient type

So, the first thoughts I have when building a tool generally involve four concepts: what data do I need to gather/export, what format is the source data, what format do I need to save it in, and how do restore/import that data back into the target?… [ Continue reading ]

Migrating

Fix those IMCEAEX NDRs

I had a customer migrate some mailboxes a few weeks ago, and they’re now just getting some NDRs.  Here’s a sample NDR:

imceaex-1

To fix this, you can take the NDR that you receive, copy/paste it into this function, and then take the resultant decoded x500 address and add it back to the proxyAddress array for the recipient.… [ Continue reading ]

Configuration

Disable Office 365 Groups Creation

Update: There are new cmdlets available for this task.  This blog is for historical reference only.  A new, updated process is available here (https://www.undocumented-features.com/2017/04/29/disable-office-365-groups-creation-redux/).

Office 365 Groups are a (somewhat) new feature that act both like a distribution list and a public folder or shared mailbox. … [ Continue reading ]