Lex's questions

We're trying to allow vendors to use EWS to connect to mailboxes on O365. We've disabled MFA for this specific user.

When we test connection to the EWS test site https://outlook.office365.com/ews/exchange.asmx internally in the corp network, it works. We get a prompt to enter userUPN and password. When we're trying outside of the corporate network, we get a prompt for userUPN and password. However, we can get through. It times out.

Does anyone know if this is the correct EWS link to test if it's working? Does that authentication come back to the corporate ADFS?

We have an Exchange 2010 server that's using ActiveSync to sync with iPhone devices. For some reason, random emails are not being synced to the device.

I am trying to review debug logging for the activesync but failing to enable this attribute. Has anyone experience this weird issue, and know the resolution to it?

Set-Casmailbox user1 -ActiveSyncDebugLogging:$true

Doesn't matter how many times or where I run this command, or when I run it for multiple users. I don't seem to be able to modify this attribute. Am I missing something?

On a Windows 2008 R2, with an AD level of Windows 2008 R2 We need to create a cert to allow user/admin to enroll via the Web service page (https://CA/certsrv/)

On CA, right-click Certificate template and select manage In the certificate template, we've created a duplicate of an existing cert, and configured it with a new name
- The cert has domain computer with read/enroll permission
- Supply in the request is selected
I ran certutil -setCAtemplates to add it to the cert template

On the web service page https://CA/certsrv > Request a certificate > Advanced certificate request > Create and submit a request to this CA, we only see a short list of certificate template

Does anyone have idea to how to publish a cert to be shown on the web page? What step am I missing here

We have an Exchange 2010 & Outlook 2010 environment.

When a bulk item is sent to multiple users, each of the message has the same unique message-ID. I am researching a way to identify to validate that it's the exact same item.

My problem is, there's no header information in the sent item from the sender's mailbox. The MFCMAPI for the sent item doesn't contain the PR_Internet_Message_ID field.

Does anyone know how to identify and validate that it is the same? OR any documentation that I should see these differently?

Edit:
I used MFCMAPI to review a few more messages from my sent items. Oddly, I found the PR_Internet_Message_ID on one while another message that I've sent does not contain this field. Both were composed by me, and not a part of any email chain. This have me scratching my head even more

Within the DHCP, we have the following IP available for distribution

Start IP Address 10.1.23.15
End IP Address 10.1.23.199

The current utilization of the IPs is around 50% We are looking to shrink the starting IP Address to 10.1.23.25 for handing out static IP for a bunch of new hardware. Does anyone know what happens to be existing leased IPs when we make such change?

• Does the lease renew upon the change, or when the lease expires at the default 8 days?
• We want to avoid user seeing any disconnection or glitches after the change

I couldn't find documentation on what to expect upon making the above change. Does any experienced AD admins has any input on how we can accomplish this change silently to prevent impacts to our users?

Many thanks