I'm trying to check out emails a client is sending out and I'm going through the Send logs.
They have an SBS 2008 server and XP Pro clients.
The messages to me, which I have received end:
Messages I think haven't been delivered end:
221 gateway.otherdomain.co.uk Service closing transmission channel,
221 2.0.0 closing connection e43si126978ert
I would have thought the second one was ok but the sender is convinced it hasn't been received.
Could somebody please help me understand these messages,