[Mailman-Users] Mailman log error

[Clovis Tristao]

Hi,

I am having problem with one of my Mailman lists, it stopped to function 
to one lists.
This appearing errors and several bounce-events-????.pck, when send 
e-mail to list.

My system:
Fedora Core 4
mailman-2.1.5-35

/var/log/mailman/smtp-failure:
Jan 29 05:09:49 2006 (1858) Low level smtp error: Server not connected, 
msgid: <43DA0C85.6070909 at mydomain.com>
Jan 29 05:09:49 2006 (1858) delivery to users at mydomain.com failed with 
code -1: Server not connected

dir/var/lib/mailman/data :
-rw-rw-r--  1 mailman mailman    4335 Fev  3 14:25 
heldmsg-graduacao-l-95.pck
-rw-rw-rw-  1 mailman mailman       0 Fev  3 13:43 bounce-events-21966.pck
-rw-rw-r--  1 mailman mailman  716831 Fev  3 12:48 heldmsg-docentes-l-79.pck
-rw-rw-r--  1 mailman mailman   45113 Fev  3 12:45 
heldmsg-graduacao-l-94.pck
-rw-rw-r--  1 mailman mailman   76828 Fev  3 08:58 heldmsg-posgrad-l-41.pck
-rw-rw-r--  1 mailman mailman   34012 Fev  2 13:52 heldmsg-posgrad-l-40.pck
-rw-rw-rw-  1 mailman mailman    5645 Fev  1 08:24 bounce-events-02358.pck
-rw-rw-rw-  1 mailman mailman       0 Jan 30 10:37 bounce-events-01858.pck
-rw-rw-rw-  1 mailman mailman    1169 Jan 20 14:27 bounce-events-02362.pck

What they are these archives(held*,bounce*)? I have some archives of 
bounce?  It's normal?
As makes to debug these errors? How to fix?
Thanks a lot,
Clóvis

-- 
Clovis Tristao - UNICAMP/Faculdade de Engenharia Agricola
Administrador de Redes - Secao de Informatica (SINFO)
E-mail: mailto:clovis at agr.unicamp.br http://www.agr.unicamp.br
Fone(0xx19) 37881031-37881038 ou FAX(55xx19) 37881005/37881010