Messages Stuck in the system...

[Ritchie P. Fraser]

Hi,
I have a CentOS 6.4 box with exim 4.80.1-1 / MailScanner 4.84.5-3 /
Baruwa 2.0/ clamav 0.97.8-1 / spamassassin 3.3.1-2.
Set up like this...

              CentOS 6.4                                               Windows SBS
Internet ---> THELMA (Wash eMail) ---> LOUISE
                                                  exim/mailscanner/                           MS Exchange Server
                                                  clam/spamassassin

My simplistic understanding of the way this process works is...

1 - Internet
      |
2 - exim(1) --- incoming mail placed in /var/spool/exim.in/input
      |
3 - MailScanner  --- should pick up mail and manage scanning clam/spamassassin
      |
4 - MailScanner  --- Clean eMail should be placed in /var/spool/exim/input
      |
5 - exim(2) --- picks up washed mail and delivers to smarthost LOUISE
      |
6 - MS Exchange --- delivers mail to end users
      |
7 - End Users

I have telnet'ed onto the box and created some mail messages. They all seem
to be stuck in the /var/spool/exim.in/input directory Between steps 2 and 3 above.

If I try to purge / delete / expunge the mail from the queue with

"exim -qff"

yields the following in the

2013-06-11 16:49:18 Start queue run: pid=11415 -qff
2013-06-11 16:48:38 1UmMnb-0001VC-AU Spool file is locked (another process is handling this message)
...
2013-06-11 16:48:38 1UmN0o-0001br-Cl Spool file is locked (another process is handling this message)
2013-06-11 16:48:38 End queue run: pid=11274 -qff

How do I find out what process is stuck?

Kind Regards,
Ritchie Fraser
Systems Administrator

T : +44 (0) 1304 840506
F : +44 (0) 1304 840075
W : http://www.marinesoftware.co.uk

Marine Software Limited
Planned Maintenance, Stock Control, Project (Refit) Management, Purchasing,
Safety and ISM Document Management systems for the Marine Industry since 1991.
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