[Simon Walter] Bug#506353: mailscanner: many scripts allow
local users to overwrite arbitrary files, and more,
via symlink attacks
maillists at conactive.com
Thu Dec 4 13:31:29 GMT 2008
Simon.walter at hp-factory.de wrote on Thu, 4 Dec 2008 11:44:45 -0000 (UTC):
> which points to an A record...
> ... like CNAMEs are dangerous.
It doesn't matter what it is. The point is that RFC doesn't like it for MX
records. That should be very well known to any server admin. And so some
mailservers don't accept mail from such sources.
I personally cannot see any connection between this and the chance of
getting spam from that source. It's a good example of an anti-spam measure
that is counter-productive. But you have to live with it and it's easy to
Kai Schätzl, Berlin, Germany
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