There was a lot of Exchange Online / EOP and Office 365 news in April and I wanted to pull them all together in one place, here! The stories range from product updates all the way to announcing new services. I have placed the articles that directly relate to Exchange Online towards the top of the list.
Need to get a list of all messages that triggered a particular transport rule, or do you want to see all rules that have been triggered by a particular sender? This information can be easily found using the Get-MailDetailTransportRuleReport cmdlet. Looking past the name being much too long, this cmdlet can provide very insightful information about your transport rules.
What better way to show off this cmdlet than with examples. Here we go.
In case you missed it, we have something new coming to Exchange Online. Last week on Office Mechanics, Shobhit Sahay, technical product manager for the Office 365 team, introduced a new service coming to Exchange Online Protection (EOP), Advanced Threat Protection.
Advance Threat Protection (ATP) adds another layer of security and protection on top of EOP, targeting specific types of advanced threats.
Update (April 7, 2015): More content and examples have been added to this article since the original posting.
PowerShell can be used to quickly search for rules matching specific criteria. This can be incredibly valuable for a tenant that contains a lot of rules. While possible to search for transport rules in the EOP portal, PowerShell offers a more comprehensive (and cooler) way to accomplish this. There are also some rule properties that can only be searched for with PowerShell.
I typically avoid the Internet like the plague on April fools day, but this morning I peaked and came across MS-DOS Mobile and just couldn't help but share. This April fools day app brings DOS directly to your Windows phone! Let's take a trip down memory lane and see what we can do with this app.
This is a quick public service announcement before the weekend starts. Exchange Online Protection has been allocated a new IP range. Starting in 30 days, EOP will add 184.108.40.206/16 to the IP pool that is used to deliver mail that passes through custom connectors (ex. EOP outbound connector which routes inbound mail to your on-premises environment).
I recently worked on a very interesting case that I wanted to share. This organization had set EOP to deliver all spam messages to end users junk mail folder.
This worked great for most users, but a small number experienced EOP delivering spam messages directly to their inbox, as if they weren’t being scanned at all. Very peculiar indeed. Let’s go through the troubleshooting process to figure out what’s happening here.
When troubleshooting mail flow it is often important to determine where a message is handed off from a partner to your Office 365 tenant, or from your Office 365 tenant to a partner. This is easy to see in a message header, just look for the receiving host with the domain mail.protection.outlook.com, as this will indicate Office 365 servers.
But what if your partner is also an Office 365 tenant, then how can we tell when a message left their tenant and entered yours, or vice versa? If troubleshooting a mail delay, this is crucial information as this will let us know which tenant is experiencing the delay.
I have recently seen a large number of cases where an organization’s own domain was spoofed to send that company phishing messages. This isn’t all that uncommon, but what was concerning for me was the method used in these cases to do the spoofing. In these cases, only the 5322.From header was spoofed, which cannot be detected by an SPF check.
I've recently seen an increase in cases that involve incorrectly published SPF records that have resulted in sent mail failing the SPF check. Ensuring your SPF record is up to date is great proactive work that can help prevent issues with SPF checks. In this article I'm going to go over how to properly set your SPF record if you are using Exchange Online or Exchange Online Protection.
There is also a common mistake that organizations sometimes make in their SPF record when they are smart hosting mail out through EOP which I will also highlight.