There may be more than one reason. Here is the one that can most likely be the case.
Outlook has an email quarantine process running in the backstage.
For some reason it may be keeping your community notifications in quarantine as if they were spam.
To avoid that this happens, save the community mailer email: community.admin@jmp.com to your Outlook Contacts.
To check whether this has happened, access the "Quarantine-Security & Compliance" Dow intranet web page where you can find a list of emails being held in quarantine for your specific email address.
If you find emails from the community in this list you can release them to your Outlook Inbox.
For more info on how to deal with quarantined emails, go to "Managing Spam" in the Dow intranet.
