[cobalt-users] Qube2 maillock error; user.lock

[David Petermeier <davep@xxxxxxxxxxxx>]

Every day or two we cannot access email on our Qube2. We receive the 
following error from our email client (Eudora):

ERR [SYS/TEMP] maillock 4:'/var/spool/mail/username'
Error reading from network, connection closed by foreign host.

In the /var/spool/mail directory there are files called username.lock in 
addition to the normal username files. I can delete the .lock files but 
they reappear when we try to check for mail again. Also, the 
/var/spool/mqueue directory starts filling up with messages that can't be 
delivered to the users with .lock files. When I check the maillog, I see 
messages similar to the following:

Oct 26 15:32:16 g2server in.qpopper[3982]: (v?) Unable to get canonical 
name of client 192.168.1.16: Unknown host (1)
Oct 26 15:32:16 g2server in.qpopper[3982]: dave at 192.168.1.16 
(192.168.1.16): -ERR [SYS/TEMP] maillock error 4: '/var/spool/mail/dave'

The only thing that seems to correct this problem is rebooting the Qube2.