Powershell – How to get the number of users actively using Lync

I also tried doing this with sendmail relaying via gmail, but opted to use postfix instead as it seemed MUCH more simple to setup. You dont have to go through the process of creating self signed certificates etc.. This howto is for gmail, but the process should be very similar for Office 365. Just a matter of finding out the server names, and authentication scheme. http://rs20.mine.nu/w/2011/07/gmail-as-relay-host-in-postfix/ Geo

Dan - yes, this should be available, if I'm understanding you right. If you mean that groups didn't have SMTP addresses assigned properly and inbound email to them got bounced for "unknown recipient" then yes, it should show this in the Message Trace feature of the EAC.

Inside the EAC/admin portal, go to the Exchange admin area and then Mail Flow and then Message Trace.

From there, just do a basic trace. If you want to specify the email addresses in question, click on the Add Users button in the appropriate section and then just type in the email address next to Check and don't hit anything but OK.

The search results should give you what you are looking for. They aren't super detailed in the EAC though.

EDIT: if you want to export the results this is going to be done through the Powershell with Exchange Online.

Something like:

Get-MessageTrace -RecipientAddress bob@domain.com -StartDate 09/17/2013 -EndDate 09/19/2013 | fl

You could add a where statement at the end as well if you wanted just the failed ones as well as grabbing the trace details.

Something like:

Get-MessageTrace -RecipientAddress bob@domain.com -StartDate 09/29/2013 -EndDate 10/3/2013 | Where-Object {$_.Status -eq "Failed"} | Get-MessageTraceDetail | fl

To export either just add > tracelog.csv to the end.