We've had trouble with the addressbook ever since we moved SM over to our
new mail system.  Currently when a user tries to modify their addressbook
they get the error "ERROR: Could not lock datafile".  The permissions on
/var/mail/suqirrelmail are fine.  Same for each users' prefs, sig, abook,
etc.  Basically everything looks just fine.  We're using SM 1.5.1 from CVS
(20040331_0040) and haven't had any trouble with it until now.  Can anyone
think of anything that might cause this error? 

One thing might be useful to point out.  /var/mail/squirrelmail is NFS
mounted onto our 2 frontline mail servers (AV/spam scanning, POP/IMAP
proxying back to the backened server) from the backend server (mail
spools, actual pop/imap daemons, etc).  We were offering SM via round
robin DNS on both of the frontend filter boxes.  That is until I realized
that when people's workstation DNS cache expired it and tried to resolve
the webmail host again, it might get the IP for the other filter box.  
When the user makes a SM query to the new box (unknown to the user), that
host tells the user they must login first since it doesn't know that the
users has already authenticated on the other box.  Annoying.  We've
stopped doing that as of this morning.  Any ideas would be appreciated.  
Thanks

Justin




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