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ChristineStack's avatar
ChristineStack
Iron Contributor
May 21, 2019
Solved

Change the sender address for DLP notifications

Our DLP email messages that go back to the user/sender  with our policy for sensitive information are using a sender address that we do not want used.   I cannot seem to find where to change the send...
data loss prevention
security
  • VasilMichev's avatar
    VasilMichev
    May 22, 2019

    The notifications should be coming from Office365Alerts@microsoft.com. There's another set of DLP-related email that will be generated from the postmaster@yourdomain.com address - are those the ones you are referring to? Once you have removed the postmaster alias, they should be displayed as "Microsoft Exchange" or similar. Make sure you update your OAB and clear any contacts/cached info.

VasilMichev's avatar
VasilMichev
MVP
May 22, 2019

The notifications should be coming from Office365Alerts@microsoft.com. There's another set of DLP-related email that will be generated from the postmaster@yourdomain.com address - are those the ones you are referring to? Once you have removed the postmaster alias, they should be displayed as "Microsoft Exchange" or similar. Make sure you update your OAB and clear any contacts/cached info.

  • ChristineStack's avatar
    ChristineStack
    Iron Contributor
    May 23, 2019

    VasilMichev  - Thank you for the response.  It was a DLP notification and a consultant had postmaster@ aliased to their account in our tenant.  This is now fixed and we have customized our mail tip and email to end user for the sharing of sensitive info (PII) via email.  We also have all alerts going to a Teams channel rather than to all tenant admins.  

     

    You saved me a TON of time giving me these directions.

     

    Thank you.

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