Forum Discussion
Trying to use the new ATP AntiPhish feature
ATP AntiPhish looks very interesting and is something that customers are looking for. I have used my O365 lab tenant and have set up ATP antiphishing in it, but I am still able to use an open relay i...
Well, the feature is still rolling out, and I've also spotted some irregularities with it. But they were gone the next morning, so I'd advise you to just wait a bit.
As for testing and in general troubleshooting the new feature, it's best to contact support. No one on these forums know what exactly the feature does behind the scenes, and I doubt Microsoft will want to publish too much information on it, as it can potentially allow the bad folks to bypass it.
Abhishek_Agrawal FYI.