[Exim] no -H files in input directory

Hi all,

Our input directory is getting overwhelmed by -D files with NO
corresponding -H files. I cant find any trace of these messages in the log
files (msglog, mainlog, rejectlog, paniclog - doing a grep on them using
the message ids). The -D files contain junk. However, the received from
address can be seen in the -D files and they're all from the same sender. A
grep on the mainlog with that ip address shows these error messages
"refused: too many messages." The refusal from this particular ip address
accounts for about 10% of all refusals in the mainlog. The smtp_accept_max
option is default (20).

Looking through the mailing list archives, I found a similar mail from Jun
1, 2001 but there was no real explanation given for this problem...

Any ideas?

thanks,
Reena