I have just under 2000 domains.  Not sure of the number
of users per domain.  There's a few thousand local email
addresses also (using pam).  Note that the high load
is only at peak times.  During most of the day I see around
2-4 per second.

Brian

  > Just out of curiosity, how many users does 20-25 
  > authentications per second equate to for you?
  > 
  > Thanks.
  > 
  > 
  > On Monday 25 November 2002 12:58, Brian Kolaci 
  > wrote:
  > > You can disable it at runtime also.
  > > Just specify it in the AUTHMODULES variable in
  > > the .../etc/*.config files (mine is at
  > > "authvchkpw authpam") rather than
  > > "authdaemond".  You don't have to go back and
  > > do a fresh compile.
  > >
  > > I was trying to use courier-imap 1.6.0, but I'm
  > > stuck at version 1.4.2.
  > >
  > > Under high loads, you *need* to have a pool of
  > > authentication servers.  I also use MySQL so
  > > the database authentication needs to take place
  > > for every request.  So some work needs to be
  > > done there, however I don't think its high on
  > > Sam's list.  I may have to tackle it in the not
  > > too distant future, but I don't think my work
  > > would get incorporated into his distribution...
  > >  Ken & Bill have been willing to take patches.
  > >
  > > Thanks,
  > >
  > > Brian
  > >
  > >   > Yeah. I ran into the same problem. They/we
  > >   > should really include that in documentation
  > >   > somewhere. In fact, I get that problem with
  > >   > sqwebmail even if
  > >
  > > I
  > >
  > >   > DO disable authdaemon.... I'm not sure it's
  > >   > the same kind of issue though.
  > >   >
  > >   > But back to the reason I posted in the
  > >   > first place:
  > >   >
  > >   > I've seen plenty of people complain on the
  > >   > sqwebmail list that authdaemon croaks after
  > >   > a short time under high load. Using only
  > >   > the authvchkpw module and disabling
  > >   > authdaemon at compile time always fixed the
  > >   > problem.
  > >   >
  > >   > What versions are you running?
  > >   >
  > >   > On Monday 25 November 2002 12:24, Brian 
  > Kolaci wrote:
  > >   > > authdaemond works for me, however IP
  > >   > > Alias doesn't work since the IP
  > >   > > information is passed via environment
  > >   > > variables.  The authdaemon protocol
  > >   > > doesn't take into account any of the
  > >   > > environment variables set by couriertcpd,
  > >   > > so your missing some of the critical
  > >   > > information.  I've mentioned this on the
  > >   > > courier list as well, however it didn't
  > >   > > appear anyone cared...
  > >   > >
  > >   > > If you disable authdaemond (and have it
  > >   > > fork/exec each login request), then it
  > >   > > works fine.  Its just not scalable (and
  > >   > > I'm getting into that problem now when I
  > >   > > hit about 20-25 authentications per
  > >   > > second).
  > >   > >
  > >   > > Thanks,
  > >   > >
  > >   > > Brian
  > >   > >
  > >   > >   > Are you using authdaemon? I believe
  > >   > >   > disabling auth daemon at compile time
  > >   > >   > fixes the problem too. compile with:
  > >   > >   >
  > >   > >   > --without-authdaemon \
  > >   > >   > --with-vchkpw
  > >   > >   >
  > >   > >   > when compiling courier-imap.
  > >   > >   >
  > >   > >   > I don't use authdaemon, and I don't
  > >   > >   > have any troubles. This is an
  > >   > >   > on-going list discussion.
  > >   > >   >
  > >   > >   > On Monday 25 November 2002 11:11, Dzuy 
  > Nguyen wrote:
  > >   > >   > > There is a bug in vchkpwd in
  > >   > >   > > vpopmail 5.2.1.  Version 5.3.x
  > >   > >   > > seems to fix it.
  > >   > >   > >
  > >   > >   > > [EMAIL PROTECTED] wrote:
  > >   > >   > > >I am using a
  > >   > >   > > > qmail/vpopmail/courier-imap mail
  > >   > >   > > > solution.  After re-installing
  > >   > >   > > > courier-imap, the first few
  > >   > >   > > > times, imap sessions to work
  > >   > >
  > >   > > and
  > >   > >
  > >   > >   > > >authenticate, but after awhile,
  > >   > >   > > > authentication fails and I get
  > >   > >   > > > nothing
  > >   > >
  > >   > > but
  > >   > >
  > >   > >   > > >LOGIN FAILED messages in my
  > >   > >   > > > maillog.  A reboot of the server
  > >   > >   > > > will fix it for a short time;
  > >   > >   > > > however, it keeps happening.  Has
  > >   > >   > > > anyone had this occur before or
  > >   > >   > > > have a possible solution?
  > >   > >   > > >
  > >   > >   > > >I am running these versions:
  > >   > >   > > >FreeBSD 4.5-RELEASE
  > >   > >   > > >Qmail - 1.03_1
  > >   > >   > > >vpopmail - 5.2
  > >   > >   > > >Courier-Imap - 1.5.3
  > >   > >   > > >
  > >   > >   > > >Any suggestions would be helpful.
  > >   > >   > > >
  > >   > >   > > >Thanks,
  > >   > >   > > >
  > >   > >   > > >Taylor Dondich
  > >   > >
  > >   > > Brian
  > >   > > Galaxy Networks, Inc.
  > >
  > > Brian
  > > Galaxy Networks, Inc.
  > 
  > 



Brian
Galaxy Networks, Inc.



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