Spam/Phishing Mails in O365

[Sathish Perugu]

Hi,

------------------------------I Need Quick Resolution for this issue please----------------------

We are getting lot of Spam/Phishing mails from different sources (From admin center also), please give the solution for how to stop these kind of mails. These are landing into users inbox. Please find the attached spam mail for reference

[#2]

Hi,
Well you could at least try something like this:
1. Analyze the header and collect ip-address
2. Add the ip-address to blacklist.

If the sender keeps changing the email route, look for something consistant in the email,and create a transport rule to drop or at least quarantine the objects.

[#3]

Exchange Online Protection should be able to stop these emails from being delivered. The amount my organization receives is ridiculous.

I do deploy transport rules to help, it has grown to 4 rules now due to the amount of phrasing I have to watch for. I spend more time approving email in my daily admin duties now then ever before and that should not be the case with all of the new smart tools. 

We buy up to ATP and most of the time that does not even stop the links from working. We have an open ticket with support, they told us to delete the policy and readd it. I am almost ready to give up. I should not have to go purchase Barracuda or Proofpoint or some other solution. 

I am willing to work with ANY EOP EXPERT that can help me tune it to stop this crazy approval process that I have going on. 

[#4]

@Robert Woods  I have been doing the same fine-tuning with mail flow rules and am currently looking at 3rd party cloud-based email filters.  Has anything changed since 2018 for you?

[#5]

@Derek Gillespie Unfortunately we ditched EOP in favor of Mimecast, which has presented its own set of challenges. I actually long for the days of EOP, and will be moving back when our 3 years with mimecast is complete. 

[#6]

@Sathish Perugu 

Sometimes, EOP protection is not good enough, you may consider Microsoft Defender (ATP)

Microsoft Defender for Office 365 | Microsoft Security

[#7]

We use ESET Cloud Office Security (which is very set-it-and-forget-it) in conjunction with EOP AND we block incoming gmail. This seems to be a good combo.