Error "no locks available" when sending to lists

Hello everyone,

	I've been chasing my tail all day trying to discover the resolution to 
this problem.  I have three mail servers each with netqmail-1.05, 
vpopmail-5.4.13, ezmlm-0.53 and ezmlm-idx-0.443.  Each of these three 
servers uses a NFS mount to store the files.  Recently, the NFS server 
locked up and required rebooting, after which mail sent to mailing lists 
gets rejected.  The bounceback message states the following:

ezmlm-send: fatal: unable to obtain lock: no locks available
I'm not going to try again; this message has been in the queue too long.

	I've gone into the mailing list's directory and removed the lock file, 
which is recreated shortly thereafter; however, I still receive the same 
error message when sending to the list.  Is there another lock file I 
need to remove or another procedure to follow to remedy this?  Any help 
on this issue is greatly appreciated.  Thanks!

-- 
Matthew Washington
Network Administrator
Sofast Communications
1 (406) 776-3278
Fax: 1 (406) 268-0012