redhat 6.1 problems

[Kevin Wright]

As I was starting my linux box, all was well until sendmail tried to start..the system hung. i rebooted into single mode, and tried to start sendmail from the comand line..it worked. I took sendmail out of the startup scripts and rebooted. I normally boot into runlevel 5, X, however, X never started. i logged in the terminal and tried to start X, system hung. about every 2 minutes or so, X tried to start itself for 3 or 4 seconds then it would drop back to the terminal..any ideas as to what the hell is going on?

[Kofi ARTHIABAH · Accepted solution]

Kevin:

It sounds like you might have a dns problem. Try removing the /etc/resolv.conf and setting up your /etc/nsswitch.conf to read:

hosts: files [NOTFOUND=continue] dns

also in your /etc/hosts file make sure that your server is identified by both the short and fully qualified domain name.

Good luck

[Albert E. Whale, CISSP]

I would have to agree. Your problems appear to be IP Addressing or DNS resolution.

Has the IP Address changed recently? Does DNS Run when you enter level 3?

Check the file /var/log/messages, this will give you great insight into what is happening.

Please let us know what you find out.

Also, have you considered upgrading?

[Dieter Degrendele]

Hi,

Remember that you have to use a fully qualified domain name, like

foo.redhad.com

Your hostname will be then:

mybox.foo.redhat.com.


With kind regards,
Dieter Degrendele

[Kevin Wright]

As it turns out, it was the DNS.but why? I have a dns server running and rememebered I experimented with changing the nsswitch.conf file to read dns first for somereason. Why does sendmail not start on bootup.In the bootup sequence, I have named starting before sendmail, actually sendmail is one of the last processes to start. Then I can start sendmail from the command line /etc/rc.d/init.d/mail start with dns first in nsswitch.conf..why not on bootup?? Can somebody explain this to me?

[Jerome Fenal_1]

If you have your DNS first, just check it resolves localhost, when it is available.
It is a good practice to leave files+dns anyway.

Regards,

Jerome

[Albert E. Whale, CISSP]

Kevin,

I'll be glad to resolve the issue for you.

What is your Domain Name (wo that I can verify that it's correct), and what error is Sendmail reporting? You can try a restart with the command /etc/rc.d/init.d/sendmail start

All it will cost you is a few forum points. Thanks for the previous points!

Have a Happy Halloween!

[Kevin Wright]

Sendmail does not report any error, and as I said, doing /etc/rc.d/init.d/mail start works fine. but sendmail does not start on bootup with nsswitch.conf:
hosts dns files

anybody know why??

[Kevin Wright]

Sendmail does not report any error, and as I said, doing /etc/rc.d/init.d/mail start works fine. but sendmail does not start on bootup with nsswitch.conf:
hosts dns files

anybody know why??