ocial network talk:
- pretty useless; not any spam orientation at all
Joshua Goodman Received talk:
- talking about parsing Received lines
- basically reimplementing spamcop algorithm
- looking for "last external IP address"
- thinks this will be useful for SenderID
- SenderID example uses HELO data, looks like, instead of
PRA or SMTP MAIL FROM; due to multiple intervening hops
- try to use heuristics to find last external IP address:
- using MX data fails due to load-balancing edge router
- also the msn.com/hotmail.com problem
- proposed algo:
- IP addr is 192.168
- HELO matches user's domain and forward DNS lookup of
HELO matches IP address - find an IP that matches MX record, next is external
- Bob Atk suggested putting external IP addrs in a DNS record?!
Brett Watson: beyond identity: problems even with sender id
- economics of whitelisting/blacklisting based on a reliable
sender identification (ie. forging is no longer possible)
- mostly a philsophical talk