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EOP Field Notes

Exchange Online Protection: Notes from the field

Tips to prevent Zero-Day Malware with EOP

I have recently seen a lot of zero-day malware attacks and interestingly, these attacks aren’t...

Author: Andrew Stobart Date: 06/05/2015

Exchange Online Advanced Threat Protection - now available

Just a quick note in what will probably be my shortest blog post ever. Advanced threat Protection, a...

Author: Andrew Stobart Date: 06/05/2015

Support Hot Topics – Strategies to Mitigate Phishing Attempts

Welcome to the first episode in a new series called Support Hot Topics for Exchange Online...

Author: Andrew Stobart Date: 05/29/2015

Noteworthy Exchange and Office 365 Sessions from Ignite

Last week was Microsoft’s Ignite conference in Chicago. There were many product announcements...

Author: Andrew Stobart Date: 05/12/2015

In case you missed it - April 2015 edition

There was a lot of Exchange Online / EOP and Office 365 news in April and I wanted to pull them all...

Author: Andrew Stobart Date: 04/27/2015

Need details on who and what are triggering your rules? There's a cmdlet for that!

Need to get a list of all messages that triggered a particular transport rule, or do you want to see...

Author: Andrew Stobart Date: 04/21/2015

Advanced Threat Protection

July 2015 Update: Exchange Online Advanced Threat Protection is now available. See the product page...

Author: Andrew Stobart Date: 04/13/2015

Use PowerShell to search for transport rules (updated)

Update (April 7, 2015): More content and examples have been added to this article since the original...

Author: Andrew Stobart Date: 04/06/2015

MS-DOS Mobile has arrived

I typically avoid the Internet like the plague on April fools day, but this morning I peaked and...

Author: Andrew Stobart Date: 04/01/2015

EOP IP Address Additions - March 2015 Edition

This is a quick public service announcement before the weekend starts. Exchange Online Protection...

Author: Andrew Stobart Date: 03/20/2015

Troubleshoot a broken junk mail folder

I recently worked on a very interesting case that I wanted to share. This organization had set EOP...

Author: Andrew Stobart Date: 03/13/2015

Ensure your SPF Record is Correct

Update: Feb 26, 2015 - A great post about Office 365 SPF checks was recently written by one of our...

Author: Andrew Stobart Date: 02/06/2015

Recipient Notifications

The ability to send a notification to the recipient when a transport rule triggers. This is a...

Author: Andrew Stobart Date: 01/16/2015

IP Ranges Added to EOP

On TechNet we publish the range of IP addresses that are used when sending mail out of a custom EOP...

Author: Andrew Stobart Date: 01/05/2015

An Ode to EOP

This is typically a slow week for people, so what better time than to post something fun about...

Author: Andrew Stobart Date: 12/29/2014

Top Ten Posts of 2014

I only began this blog in June of this year and so it’s hard to believe that it is already six...

Author: Andrew Stobart Date: 12/24/2014

Message Trace, the PowerShell Way

From my experience, a very small number of people actually choose PowerShell over the GUI (Graphical...

Author: Andrew Stobart Date: 12/16/2014

Exchange Server December Updates

Update, Dec 11/14: Exchange Server 2010 SP3 Update Rollup 8 has been temporarily pulled due to a...

Author: Andrew Stobart Date: 12/09/2014

Remote Desktop Connection Manager updated to v2.7

Remote Desktop Connection Manager, or RDC Man, is a wonderful piece of software that I’ve been...

Author: Andrew Stobart Date: 12/02/2014

An Early Gift, EOP Bulk Mail Detection - The Easy Way

This past summer we added new bulk detection capabilities to Exchange Online Protection. At the...

Author: Andrew Stobart Date: 11/27/2014

Easily tell which transport rules a message triggered

Hello fellow traveller, come sit with me by the fire, there is plenty of room. You look to be weak...

Author: Andrew Stobart Date: 11/20/2014

Transport Rule Limit Increase

In the past the maximum number of transport rules that you could create in Exchange Online...

Author: Andrew Stobart Date: 10/27/2014

Best Practices for Finding Executable Content

UPDATE (October 14, 2016): We now recommend using the Common Attachment Types Filter to block file...

Author: Andrew Stobart Date: 10/14/2014

Inbound Connector Configuration You’ll Want to Avoid

I recently worked with a customer who had a configuration in their EOP outbound connector that broke...

Author: Andrew Stobart Date: 09/05/2014

Behavior Change When Setting the SCL with a Transport Rule

With my coffee currently in one hand, it would be very useful if I could type with only my other...

Author: Andrew Stobart Date: 08/28/2014

Special Case, Set SCL to 0

Update (August 28, 2014) - Setting the SCL with a transport rule to anything from 0 to 4 will cause...

Author: Andrew Stobart Date: 08/22/2014

Importing Safe and Block Lists with PowerShell

I just dropped my van off for some maintenance at the dealership and am currently waiting for a...

Author: Andrew Stobart Date: 08/15/2014

One MX to Rule Them All

Before I start I would like to call out that I think this is the best blog title that I have come up...

Author: Andrew Stobart Date: 08/06/2014

Is X-Microsoft-Antispam a New EOP Header

Yes, yes it is, and I’m glad you noticed! X-Microsoft-Antispam is quite new and only started...

Author: Andrew Stobart Date: 07/30/2014

Quarantine and PowerShell

The EOP online quarantine is a wonderful feature that can be easily managed through the Office 365...

Author: Andrew Stobart Date: 07/22/2014

Verifying ESN Delivery

So, you have decided to use the Exchange Online Protection (EOP) quarantine and have enabled End...

Author: Andrew Stobart Date: 07/03/2014

Advanced Spam Filtering and X-CustomSpam

When a legitimate message is marked as spam, the first question usually asked is “why?”...

Author: Andrew Stobart Date: 06/27/2014

On-Premises Delivery Failover

Organizations with on-premises mail environments often will have a primary site and at least one...

Author: Andrew Stobart Date: 06/27/2014

The Resolver

While “The Resolver” would be a great nickname for a councillor, that’s not quite...

Author: Andrew Stobart Date: 06/25/2014

Office 365 for Business Public Road Map & First Release Program

Yesterday we released details on two very exciting items, the Office 365 for business public roadmap...

Author: Andrew Stobart Date: 06/20/2014

Outbound Connector Smart Host Behavior

If you have an on-premises mail environment that you are protecting with Exchange Online Protection...

Author: Andrew Stobart Date: 06/16/2014

Prevent DLs From Receiving ESNs

I’m often asked how to prevent an End user Spam Notification (abbreviated as ESN from this...

Author: Andrew Stobart Date: 06/13/2014

Great Sessions from TechEd North America 2014

Last month I attended TechEd North America 2014 in Houston Texas. In addition to attending some...

Author: Andrew Stobart Date: 06/10/2014

TLS, Connectors, and You

Update (September 3, 2014) I was recently involved in a case where a customer needed more...

Author: Andrew Stobart Date: 06/06/2014

Inaugural post

In my current role I work with customers who are implementing Exchange Online Protection. From...

Author: Andrew Stobart Date: 06/02/2014

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