Thank you to all for the helpful information!
-H and -R did the trick and solved what appeared to be slow authentication
but was really DNS related. This gave the added benifit of taking a huge
load off our primary DNS server and now web pages appear to serve snappier!
Obviously, we may want to consider upgrading our DNS server which is only
running on a 486 right now... :-)
Thank You,
Jose de Leon
----- Original Message -----
From: Markus Stumpf <[EMAIL PROTECTED]>
To: Jose de Leon <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Wednesday, October 13, 1999 7:27 PM
Subject: Re: Slow Authentication (need help)
On Wed, Oct 13, 1999 at 04:33:27PM -0700, Jose de Leon wrote:
> I'm using QMail 1.03, and using tcpserver instead of inetd. Linux 2.0.xx.
> Some POP3 account users are complaining of slow POP3 authentication.
About
> 50% of the time, authentication times out. I have noticed the problem
too,
> but once authenticated, download of email is quite fast.
This may also be a result of slow DNS and/or IDENT lookups:
- you may use the -R switch to disable IDENT lookups (very much recommended,
as most systems do not provide reliable info anyway).
- you may use the -H switch to disable remote host name lookups.
This speeds up connections if DNS is slow or broken for the IPs
your customers come from. It also is useless if the IPs do not have
PTR records.
Please note that these settings may also be useful if you start
qmail-smtpd via tcpserver.
> Are there not enough connections allocated for tcpserver? How can I check
> if maximum connections are being used?
start your tcpserver with -v switch and direct its output to a logfile.
There you should see messages like
tcpserver: status: 2/150
That means that currently 2 out of 150 max tcpservers are active.
The max limit can be increased with -c<num>, default is 40.
> Or are there settings in QMail itself I need to change?
No.
\Maex
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