MySQL Student:
> Hi,
>
> >> ?said: 421 smtp01.example.com Error: timeout exceeded (in reply to end
> >> of DATA command))
> >
> > Unfortunately, you deleted lots of useful information from the
----vvvvvvv
> > logging, including the break-down of handshake delays and of
----^^^^^^^
> > transmission delays.
>
> I wasn't sure that I should post the whole queued message here.
I think I was asking for LOGGING, in my reply above.
Please make a tcpdump recording. It will show why your KERNEL TCP
stack stops receiving ackowledgments from the remote side, or why
your KERNEL TCP stack stops sending to the remote side.
The TCP window scale factor is chosen by your KERNEL. Your KERNEL
has no clue about how much mail will be sent over the connection.
Finally, it is possible that hardware mis-behaves with certain
bit patterns. One should never exclude the unlikely.
Wietse
