When I use a mail client (such outlook express) on a pc dialled in to my ISP then I can send with no authentication.
send to where? you have to send to a non-Imail domain to see the no-relay action.
Interestingl, if I telnet to the server I get no joy
no joy doing what?
unless I use a local user ID.
use a local user ID for what?
If I run the open relay tools at abuse.net it passes all tests and reports that its not a relay.
ok
I'm guessing that this is related to the port forwarding - the Imail server is seeing the inbound (from outside) smtp stuff as originating from itself and so is sending it???
the NAT + port-forwarding will not change the source address, so Imail will see the source IP as if there were no NAT + port forwarding.
So on to my question - how secure am I?
If abuse.net can' relay, you're secure against SMTP relaying.
and what can I do to get it to behave as I want to
how do you want it to behave differently from what abuse.net found?
- ie anyone that sends
... to an non-Imail recipient domain ...
has to authenticate?
Len
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