RE: Everything about Sendmail is Slow
Ok, I made all the changes to the resolv.conf and hosts files.
Now when I run the sendmail -bt -d0.13 command it doesn't give any
errors about not being qualified, so that's good! But, I'm still having
the same problem with sendmail responding slowly. :(
I did a bunch of nslookups and so far it all looks good, the server is
set to resolve with itself through bind which had no problem with every
valid name I could throw at it. You still think it's a name resolution
>no upgrades or anything ?
Yep, I'm the only one that administers this server with root access and
besides adding users and forwarding one port now and then I haven't
We did switch to a new ISP about a month ago, so the DNS and IP address
was updated to reflect this, but everything worked great for 2 weeks
after the changes. That's like the only change.
This is a non profit organization so they have little money to fix
things, and most of my time here is volunteer based for them, but I like
to do it because I get to learn all about Linux in the process.
So, is there any other cool commands I could try to diagnose this thing,
or a even a good documentation on troubleshooting. I have looked all
over the net for troubleshooting docs, along with this 800 page Sendmail
manual I have and no one seems to offer much help in that area.
Otherwize, I could try to upgrade Sendmail to the newest version, maybe
that would fix it.
From: Richard A Nelson [mailto:firstname.lastname@example.org]
Sent: Monday, March 04, 2002 2:16 PM
To: Dave Scott
Cc: Debian User
Subject: RE: Everything about Sendmail is Slow
On Mon, 4 Mar 2002, Dave Scott wrote:
> Richard, thanks for the help :)
no problem, we'll get this squared away quickly...
> As far as the "sendmail -bt -d0.13" command. It comes up with a error
> half way though that says: "WARNING: local host name (localhost) is
> qualified; fix $j in config file
This isn't good, and is likely 99% of your problem
> ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)"
Normal, don't worry about that
> The hosts file reads
> 127.0.0.1 localhost rapids
> mail.server.ip.address rapids.mydomain.org rapids
I'd remove the 'rapids' from the 127.0.0.1 line...
> The resolv.conf reads
> nameserver 127.0.0.1
> search rapids.mydomain.org
> nameserver 126.96.36.199
> nameserver 188.8.131.52
That should say search mydomain.com ! Otherwise, it tries to qualify
every host with 'rapids.mydomain.com'
> The hostname file reads
no problem here
> Now, this all seems weird because this mail server was functioning
> totally fine up to a week ago and no one was in there doing anything.
no upgrades or anything ?
> Any command you give to the sendmail system takes about 1 minute to
> minute and half to respond, not just the mailq command, the sendmail
> command also takes time, basically if you try to talk to sendmail
> anything there is a delay, even if the mailq is totally empty there is
> still a delay, is this normal, because it always responed quickly
> this happened.
> Do you think that message about localhost not being qualified is the
Most definetly... the first thing sendmail does is a gethostbyname call,
and it does this for pretty much every invocation...
Turn right here. No! NO! The OTHER right!
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