O365 - ADSync and groups

[Alexander Noack]

Piler is setup to do Authentication against MS-ActiveDirectory. All 
Mailboxes are hosted on O365, sent to Piler via a Journaling rule. 
AD-Sync is setup to sync with Azure-Ad (O365).

Now when I login to Piler (Auto-Login via SSO) I don't see any 
additional groups for my user. It looks like for Exchange On-Premises 
this attribute would get populated by my distribution-groups membership. 
Since Groups created in O365 are not synced back, they don't exist in my 
AD.

I know, I can use 
https://www.mailpiler.org/wiki/current:custom-authentication to create 
group attributes based on arbitrary AD groups. I just would like to know 
how other people are tackling that issue.

For Public-Folder email addresses I created Groups within Piler and 
assigned users there.

Alex