Rick Moen <rick at linuxmafia.com> 51 lines of wisdom included:
> Aw, c'mon. It's dead simple to check without external assistance. All
> you have to know is the definition of "mail relay" and a handful of SMTP
Apart from the sneaky tests you mentioned, one other advantage is
something that Niall mentioned in one of his original posts. Some
people don't have access to external machines.
In an example business LAN environment, the MTA will more than
likely be less restrictive as to what can be done from within the
LAN (relaying being one of the most common examples).
As a result, you need to test from outside this environment. One
suggestion (as you've noted in a different mail) is to setup a test
box connected to the external interface. The other option is to use
some sort of external relay tester. Depending on the situation one
can be of benefit over the other.
Philip Reynolds | RFC Networks Ltd.
philip.reynolds at rfc-networks.ie | +353 (0)1 8832063
http://people.rfc-networks.ie/~phil/ | www.rfc-networks.ie
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