Hi

> I don’t think you did. Unless I am very much mistaken, Benoit is
> logically *outside* the specific Ironport systems, which is why this
> is worthy of inspection.

Correct. I was the recipient of the quarantine notification. I am not
subscribed to any cisco Ironport service. The MX of the recipient
domain does not point to a Cisco IP Address.

But the sender domain did point to an IP address belonging to cisco.

> It is, most likely, a naive or inexperienced Cisco Ironport customer
> - or it’s a vulnerabilty being exploited. I very much suspect the
> former.

For me the most likely cause seems to be that somebody is hosting their
email services with cisco and an user's credentials were compromised
and used to send phishing email via cisco's infrastructure.

But instead of blocking the outbound emails and noticing the cisco
abuse desk, the outbound emails were quarantined and notifications
about this sent to the intended phishing victims leading them to
the same website the customer could use to inspect his inbound
quarantine and also presenting a log-in site to the victim who has no
credentials to log in.

Mit freundlichen Grüssen

-Benoît Panizzon-
-- 
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