I just received a message from the ORBS database. It seems that qmail
has a bug.feature which allows relaying of messages in the form
jn%it.swin.edu.au@[1.2.3.4]
Where 1.2.3.4 is the IP address of my mail server, not for
it.swin.edu.au. (I don't want everyone on the list to try it :).
The machine should accept mail for 1.2.3.4, but the message is actualy
sent to [EMAIL PROTECTED]
The mail relay should only accept mail for [EMAIL PROTECTED]
I have tcpd set up to allow relaying only from machines inside 1.2.3.0
Is there a way to dissable this feature/bug.
If you want to test your system, use the telnet service from here
http://maps.vix.com/tsi/ar-test.html
I am sure that there are many people with a simalar setup which could
pose a large spam risk.
I would appreciate a speedy reply.
John.
--
Information Technology Innovation Group
Swinburne University. Melbourne, Australia
http://uranus.it.swin.edu.au/~jn
