Solved

Phishing alert from Office 365

Posted on 2016-07-28
4
7,094 Views
Last Modified: 2016-11-24
I have email through Office 365.
Some of my users get this alert in some emails that I have never  seen before:

"This sender failed our fraud detection checks and may not be who they appear to be. Learn about spoofing <http://aka.ms/LearnAboutSpoofing>  Feedback <http://aka.ms/SafetyTipsFeedback>               "

- Where is it coming from?
- is it a new feature of Office 365?
- is it a feature we have to turn on, or is it on by default?
0
Comment
Question by:ie0
  • 2
4 Comments
 
LVL 40

Accepted Solution

by:
Adam Brown earned 250 total points (awarded by participants)
ID: 41733855
Most likely the sending organization(s) do not have reverse DNS configured on their mail server IP or are failing an SPF check (or they have no SPF record in DNS), in combination with having text that matches some known Phishing attempts in the body or subject. It's not really a new feature, you probably just haven't run across it til now. I can find references to similar notifications going back 3-4 years. If you know the messages are valid, you can ignore the notice. It comes from Microsoft's servers when they do spam checks.
0
 
LVL 14

Assisted Solution

by:Michael Dyer
Michael Dyer earned 250 total points (awarded by participants)
ID: 41733895
Yes, it is part of the Microsoft Anti-Spam protection.  You can adjust the settings online if you want - check out this article for details:  

https://support.office.com/en-us/article/Office-365-email-anti-spam-protection-6a601501-a6a8-4559-b2e7-56b59c96a586
1
 
LVL 14

Expert Comment

by:Michael Dyer
ID: 41757605
question is abandoned - awarding points to best answers
0
 

Expert Comment

by:Leif E Oestli
ID: 41900531
Problem is that this link <http://aka.ms/LearnAboutSpoofing>  Feedback <http://aka.ms/SafetyTipsFeedback>     
Is not safe its antipnishing spam, so if you use Bitdefender or other serious security  programs. It will be a ongoing problem I guess. And you block down all your domain. Its a disaster and very damaging solution this one.
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Scam emails are a huge burden for many businesses. Spotting one is not always easy. Follow our tips to identify if an email you receive is a scam.
Find out what Office 365 Transport Rules are, how they work and their limitations managing Office 365 signatures.
To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it. The vast majority of email clients display l…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

713 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question