I have an SBS client who is having huge problems receiving mail. Many
messages aren't getting through to them. A typical NDR at the sender would
be:
<conversation with mail.company.com [123.123.100.101] timed out while
sending end of data -- message may be sent more than once>
The environment is: SBS 2000 with SP1, ADSL internet connection using 2nd
NIC and router, dynamic IP address and using a dynamic DNS provider to
resolve the server's Exchange address.
We're getting a little desparate - we suspect that hundreds of messages are
getting lost.
Suggestions, please?