[lug] testing postfix against relay

[Ken MacFerrin]

D. Stimits wrote:
> I believe I have a postfix install set up correctly, such that it will
> deliver email to the local machine from either the local machine or from
> outside. Also that local users can email to the outside world. Is there
> an "acid test" to verify that it will not relay from the outside world
> to the outside world?
> 

I've found this one to be pretty reliable: http://www.abuse.net/relay.html