I need to confirm who has signatures?
From the Server Console run the following command:
load esig showuser
There will be an entire list of users from your Domino Directory indicating the signature they have been assigned.
[0BF0:0002-128C] 08/12/2016 02:38:32 p.m. Mail Signature: CN=Alan Billington/O=Crossware - does not have a signature assigned
[0BF0:0002-128C] 08/12/2016 02:38:32 p.m. Mail Signature: CN=Alfredo Mujica/O=Crossware - has a Server Signature assigned - Crossware Signature
It should be possible to copy the details from Log.nsf (Miscellaneous Events) and paste into Excel for further analysis