[exim] Another connection reset by peer

Hello,

I have "connection reset by peer" error when I try to send a message to a
server with Microsoft ESMTP MAIL Service, although I can telnet to the host
and send a mail directly. Tips from FAQ didn't help.
How can I know what command cause reset by peer? Is it possible to write all
commands of smtp-session to message log?

Regards,
Mikhail.