Is there a report to find duplicate proxy address using Enterprise Reporter?
Thank you for your question. The Enterprise Reporter team will investigate this for you and respond shortly.
Just to understand the requirements, are you asking for a report which will list all AD (on-premise) users which have a proxy which is shared by multiple users?
Yes that is right. Example, if two people have firstname.lastname@example.org. I can do this for mail, but proxy attribute are multivalued and store with SMTP:email or smtp:email or sip:email
Can you please confirm what version of ER are you using?