> My question now is: what's going on?
> Since the SMTP connection never ends, I don't really know what the heck
> are they trying to send me; plus, it would have needed to be something
> really *big*, since the incoming bandwidth usage was on 96 Kbytes/sec.
> for the whole weekend; you do the math. Rather than that, I think that
> it's probably the other side's mail server being buggy and sending
> garbage and never closing the connection properly, so I'm writing here
> to see if anyone else has seen something similar.
Checking the logs should give you some idea of what is happening,
and its always smart to include information you find there.
It might be abuse, so you should check for Open Relay on your server,
or someone might be sending you a hole ton of E-Mails.
When it comes to the "pathetic" Micro$oft and their products,
I've observed the following behaviour in some of their E-Mail clients.
When their client gets a error messages and the client gives you
a POPUP windows saying that the mail you are sending are too big,
they still try to send the E-Mail over and over again without delay.
Shouldn't be surprised if their mailserver did the same thing,
so if you are using DATABYTES this could be the reason.
MVH Andr� Paulsberg