[exim] SMTP connection from (host) [ip] lost while reading m…

Hi!

I have several erros like this in log:

SMTP connection from (host) [ip] lost while reading message data (header)
.

What is it caused by and how could I fix it? :|
Some clients can't send data over SMTP due to this.

After some digging I found that traceroute <ip> won't find the target
ip as after the 3th hop it outputs "* * *" in all the further lines.
Can it be related?

Never seen this happening before upgrading to debian etch from sarge.. :|

Thanks, Joe