Den 2012-08-05 22:36, Patrick Ben Koetter skrev:
As I understand it the client you want to connect to your server is
not
capable to do SMTP AUTH. Will you be able to identify the client by
its static IP?
static ip is as foolproff as pop before smtp (NAT can still accur on
static remote ip)
but smtp auth is only one user, no matter how he connect
Will it connect comming from a known IP space e.g. a VPN IP range? Or
is
it able to use a TLS client certificate?
irrelevant with smtp auth
If we find a criteria we can solely attribute to your client will
have
something the server can trust in.
correct
p@rick
