Exchange

Update to Wipe Exchange Online Mailbox Script

Earlier this evening, a former peer asked me about trying to bulk delete items from the Drafts folder on a customer’s Exchange Server 2010.  While Microsoft Exchange Server 2010 reached end of support in October 2020, it still will work (though we certainly don’t recommend keeping it around, as it’s no longer receiving regular maintenance, support, or security updates).… [ Continue reading ]

Configuration

Keep calm and SendAs a Proxy Address

I’m gonna channel the great Etta James:

Ok, I’m back.

I’ve been waiting for this feature for what seems like an eternity–the ability for a mailbox that has multiple proxy addresses to send from any of those addresses.

Background

As most of you probably know, a mailbox can have a whole lot of additional SMTP addresses associated with it (a mailbox can have up to 400 proxy addresses stamped on it). … [ Continue reading ]

Exchange

Exchange Function to Test MRSProxy Endpoint Authentication

This week, I was helping someone troubleshoot authentication issues when hybrid migration mailboxes to Exchange Online.

In order to migrate a mailbox successfully, the EWS endpoint virtual directory should have NTLM/Negotiate authentication method available.

You can quickly see what the endpoint is showing available by using this function:

Function Test-MigrationEndpointAuthentication($Url)
{
  # Build URL
  $Url = $Url.TrimEnd('.').TrimEnd('/').TrimEnd('.')
[ Continue reading ]
Exchange

What happens when an Office 365 customer doesn’t point to EOP as their MX?

I get asked this question quite frequently–usually by customers who want to continue using their existing on-premises antispam or antimalware gateway or want to attempt to implement a defense-in-depth strategy.

The graph and intelligence behind Exchange Online Protection (EOP) processes at least half a trillion (500,000,000,000) messages a month–the AI behind it is continually monitoring and learning what is spam and what is not.… [ Continue reading ]