Hi,
Why is an abuse-mailbox attribute needed at all? The whole object is an abuse-c. Everything in it is to be used as abuse contact. This also includes, but is not limited to, telephone numbers, postal address, fax etc. There is already an email attribute. If I remember correctly, this attribute is not mandatory - which is fine by me for now.
The idea is to use the abuse-mailbox attribute for automated complaints and the email attribute for human conversations. The main difference would take part in the query process, while the email attribute will be handled as personal data the abuse-mailbox attribute could be queried unrestricted. This makes it very easy for abuse reporters to automate these mechanisms. The mailbox for human conversations could be secured with a spamfilter. That gives spammer a smaller chance to deliver their junk and it makes it pretty hard for "VIPs" to send their spam complaints to the wrong address to gain more attention. Thanks, Tobias -- abusix