For anyone who's working on the list management BCP:
I sign all my outgoing mail, and I have a feedback loop set up with
Yahoo, which being very modern and advanced keys on signatures, not IP
addresses. A few days ago I sent some messages to one of the Freebsd
mailing lists. Today some Yahoo user who subscribes to that list hit
the spam button. Freebsd's list software (Mailman, I think) doesn't
sign, and doesn't strip any headers. So what happened? Yahoo saw my
signature and sent the reports to me, which was of course useless
since I don't run the list.
This is not a hypothetical problem--all of my recent Yahoo FBL reports
have been for mail I sent to mailing lists elsewhere. The lists I do
run sign their mail, and FBL reports for those lists are handled
reasonably. My scripts do what they can with this stuff, but sending
unsub commands to majordomo(_at_)freebsd(_dot_)org doesn't work.
R's,
John
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