Solved

This sender failed our fraud detection checks and may not be who they appear to be. Learn about spoofing

Posted on 2016-10-31
6
57 Views
Last Modified: 2016-11-08
After Migrating from a local exchange to office 365, only when I send an invite I get this message
This sender failed our fraud detection checks and may not be who they appear to be. Learn about spoofing

I do have a spf record in place.
0
Comment
Question by:alonig1
  • 3
  • 2
6 Comments
 
LVL 38

Expert Comment

by:Vasil Michev (MVP)
ID: 41867139
Which server is generating the NDR? Can you post it (the sanitized one) here?
0
 
LVL 14

Expert Comment

by:Jason Crawford
ID: 41867148
Did you update your SPF records after moving to Exchange Online?  Try using the Kitterman SPF tool to validate the syntax:

http://www.kitterman.com/spf/validate.html
0
 

Author Comment

by:alonig1
ID: 41867156
Yes.
0
Are your corporate email signatures appalling?

Is it scary how unprofessional your email signatures look? Do users create their own terrible designs and give themselves stupid job titles? You can make this a lot easier for yourself by choosing an email signature management solution from Exclaimer today.

 
LVL 14

Expert Comment

by:Jason Crawford
ID: 41867161
In that case we'll need to see the message to troubleshoot further.  One on one assistance is available if needed.
0
 

Accepted Solution

by:
alonig1 earned 0 total points
ID: 41873277
It was the saving of the contact name. I needed to delete the names and re-enter them (local users)
0
 

Author Closing Comment

by:alonig1
ID: 41878480
solved.
0

Featured Post

Don't lose your head updating email signatures!

Do your end users still have the wrong email signature? Do email signature updates bore you or fill you with a sense of dread? You can make this a whole lot easier on yourself by trusting an Exclaimer email signature management solution. Over 50 million users do...so should you!

Join & Write a Comment

Utilizing an array to gracefully append to a list of EmailAddresses
Following basic email etiquette rules will help you write a professional email and achieve a good, lasting impression with your contacts.
This Experts Exchange lesson shows how to use VBA to loop through rows in Excel.  In order to sort, filter, and use database features, there needs to be a value in each column for every row. When data arrives with values missing, code to copy values…
Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…

706 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

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now