Re: [cobalt-users] RaQ4 - CPU overload

[ajongsma <andries.jongsma@xxxxxxxxxxx>]

/usr/sbin/ipop3d - It's a POP3 server v7.64 ???

Some info about this little command is located at:
http://www.cert.org/advisories/CA-1997-09.html
http://www.tux.org/hypermail/linux-net/1999-Apr/0363.html
http://www.mail-archive.com/redhat-list@xxxxxxxxxx/msg10702.html
http://www.acm.org/crossroads/xrds6-1/linuxsec.html

My httpd.conf contains the following line:
pop-3   stream  tcp     nowait      root    /usr/sbin/tcpd  in.qpopper -R

I think it's indeed something to look closer at but it shouldn't be nescesarry
to change this if it indeed does what I suspect. Cobalt is the only one who
can actually tell what it is and what it will do I'm affraid.

The problem is that the possible cause of this CPU overload lies within the
qpopper so I'm back to another problem I'm having, the mailinglists. They are
waiting in the queues until it's about 18:00 hours, then they are transmitted
(in the meantime the command sendmail -q will force some retries and send a
few but this takes CPU time again).
The mailserver takes a lot of CPU to process for the qpoppers also. Sometimes
56% for only 1 qpopper. You can guess what I will find in my mailbox after
that...

"H.P. Stroebel" wrote:

> ajongsma schrieb:
> >
> > And that's the whole problem, it doesn't. It just starts the monitor.cgi
> > (randomly it seems) and gives me this warning by mail. It allmost seems
>
> the monitor (swatch) starts every 15 minutes (i remember -but i am not
> sure-
> some postings some months ago concerning false warnings)
>
> > like the CPU idle time has something to do whith this message (below
> > certain percentage let's give a warning).
>
> top does not help as it gives you only a snapshot of the moment it is
> running.
>
> if the problem results from qpopper, there is another pop3-server in
> /usr/sbin called ipop3d. it is undocumented however, seems to be from
> the gnu project, but i`m not sure. did not hear about any recent
> security concerns. i`m using it internally for testing purposes, it`s
> okay, but i don`t know how it will perform under heavy load.
>
> maybe sooner or later i`ll replace my qpopper with it, but i don`t find
> any useful information about it...
>
> --
>
> H. P.  Stroebel, Germany
>
> CGI-FAQ for Raq-Newbies :
> http://users.iol.it/hpstr/
>
> Apollo 13 - Commander : "Houston, we have a problem"
> Win2000 - Administrator : "Redmond, we have 64000 problems"
>
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