sendmail mqueu-client remaining files

[g4-lisz@tonarchiv.ch]

Hello there

I have a question concerning sendmail and it's MSP functionality on Debian.

I'm running a mail server with MTA running as daemon and MSP running as
cronjob.

My /var/spool/mqueue-client looks like this:

-rw-rw---- 1 smmsp smmsp        229 2008-09-12 05:09 dfm8C39JIw008052
-rw-rw---- 1 smmsp smmsp 2147483647 2009-06-19 14:59 dfn5JCo1AO015780
-rw-rw---- 1 smmsp smmsp 2147483647 2009-06-19 15:11 dfn5JD02BS009581
-rw-rw---- 1 smmsp smmsp 2147483647 2009-06-19 15:19 dfn5JDA256032527
-rw-rw---- 1 smmsp smmsp 2147483647 2009-06-19 15:29 dfn5JDK1jW023879

That takes about 8 Gigs of space! But at the same time the MSP queue is
said to be empty:

hosting:~# sendmail -Ac -bp
/var/spool/mqueue-client is empty
		Total requests: 0

How can this be?

Where these files maybe left over from a crash? Can i remove them now by
hand without getting into troubles?

Any help would be much appreciated!
TW