lmtpunix - strange log entries

[Per Steinar Iversen]

I have noticed a small fraction of lmtpunix log-entries containing control 
characters, a sample from lmtpunix at debug level:

Oct 21 15:02:07 imap lmtpunix[21111]: duplicate_check: M-mZ-C^CqM-QsM-tS^AM-x]M-lM-XM-^V                         aslaug               1098965023

The line has been filtered through "cat -v".

At the loglevels above this the message delivery looks ok.

It is rare to find control characters in the syslog - does this indicate a 
problem somewhere?

Our system is running on RedHat AS3 U3, the Cyrus imapd RPM is 
cyrus-imapd-2.2.8-1 from Simon Matter.

-psi
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