Re: Large spool mboxes => slow?

Hugh Sasse wrote:
> Enabling server mode is not possible given some types of client (from 
> my reading of the docs).  I don't know all the clients people use, so 
> I must err on the side of caution.  Or is that paranoid in 2006?

I'm not aware of any problems with server mode and particular POP 
clients.  As I understand it, the only issue is whether any other 
programs on the local system are altering the mailbox.  If it's just 
sendmail and qpopper, it should be OK.  But it's entirely possible I've 
missed something in the docs.

That said, you *can* enable server mode for specific users.

We have a similar problem where we couldn't turn server mode on for 
everyone because some people use webmail and others use POP.  However, 
our "problem" users -- the ones with the biggest mailboxes who leave 
mail on the server and check the most frequently -- only used POP.

We put the following in our qpopper.config:
	set spool-options = true
Then we set up .username.qpopper-options files in our spool directory 
containing:
	set server-mode = true

The server used to have major I/O delays whenever one of these users 
connected.  After I set this up for just 5 accounts, the problem cleared 
up completely.

-- 
Kelson Vibber
SpeedGate Communications <www.speed.net>