Domino To Zimbra. Is it possible to provide "Hierarchical Address Book"?

[tkomatsu]

Hi team,

I have a big lotus notes domino to Zimbra deal.
I am not an expert on Lotus notes.

My customer said that they had "Hierarchical Address Book" feature with Lotus Notes. With this feature, they could chose anyone from different departments when they create e-mail.

Their company is very big company and has more than 10,000 divisions.
To keep their employee's experience, they want to have the same function ( Hierarchical Address Book ).


Do you have any idea? or have you already developed the such feature which you can sell?

Anyhelp will be appreciated.
Thank you!