[exim] smtp lost after final dot

HI,
I have problem with some messages from our internal network. We have one printer which have ADF and when it try to send scan through network it not pass and in log file i have this error:
2016-06-01 11:51:37 1b81rk-0006Ie-Q4 SMTP connection lost after final dot H=(printerour) [192.168.0.36] P=esmtp
And that's all.

What other should i provide as info?

Best Regards.