You are correct that SMTP is a peer to peer protocol, not a client server
protocol. However, there is a distinction between mail routing, an MTA
function, and mail submission, an MUA function.
The MUA in this case is performing (incorrectly) MTA functions. That is a
On Fri, 19 Sep 2003, Anthony Atkielski wrote:
No, its not valid for a mail client to make direct
There is no distinction between a mail client and a mail server in SMTP. It
is perfectly valid for either to deliver mail directly to another SMTP