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Re: [Asrg] New proposal for spam blocking: Greylisting

2003-06-20 09:48:31
At 11:18 AM -0500 6/20/03, Evan Harris wrote:

Well, keep in mind that the longer you run the system, the more
"relationships" that are observed and whitelisted.

As with any whitelist, there are potential privacy concerns, but these concerns would be greater here because of the additional data tracked in the database. Of greatest concern would be:

   relay_ip                # sending relay in IPV4 ascii dotted quad notation
   mail_from           # ascii address of sender
   rcpt_to                 # the recipient address.
   blocked_count   # num of blocked attempts to deliver
   passed_count   # num of passed attempts we have allowed
   create_time       # timestamp of creation time of this record
   last_update       # timestamp of last change to this record

[http://projects.puremagic.com/greylisting/source/dbdef.sql]

This extra data would provide a useful "permanent" record that would be subject to criminal or civil subpoena. Some users would gladly choose to allow this type of database to be created if it effectively reduces spam, but users would need to be fully appraised of the privacy risks.

John

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