Hi, I would like to implement a system to distribute PDF document. I would like to use ZOPE on 5 server distributed in Europe. I would like to build a system that send an email to a paying user where I put an URL. I would like that in URL I send temporary authentication information to allow access to a virtual directory where I put only documents or images files that user purchased. Have you any hints on how implement this architecture? Thank you in advance, Luciano Caroti.