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[cobalt-security] Qube 3 - Open Relay when Email Delivery Frequency other than "immediate" selected
- Subject: [cobalt-security] Qube 3 - Open Relay when Email Delivery Frequency other than "immediate" selected
- From: Malcolm McLeary <mmcleary@xxxxxxx>
- Date: Fri, 28 Feb 2003 10:02:21 +1100
- List-id: Mailing list for users to address network security on Cobalt products. <cobalt-security.list.cobalt.com>
Hi Guys,
Does anyone have their Qube3 set up to delivery email other than
Immediately?
I have reason to suspect that if a Qube3 is set to queue mail and deliver it
every 15 mins, 30 mins, 1 hour, 6 hours, or once a day, it will be open to
abuse as an OPEN RELAY.
I hope someone can prove me wrong.
I've had a Qube3 abused in this fashion and after cleaning up the mess I've
done some trials and it does not look good. When set to 15 mins the Qube3
will accept messages which would have been rejected if immediate delivery
were selected and then at the appropriate time relay them.
Cheers, Malcolm