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Cannot access domain name but can access server through ip

My apache server is running well. All of a sudden, the following happens

httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName

I have check Virtual Host in /etc/httpd/conf/httpd.conf and etc/hosts

May I know what's wrong?

thanks

gb-sdc

What does the /etc/hostst file contain for 127.0.0.1?

What does the "hostname" command return?

Does this match ServerName in httpd.conf?

shortandsharp

ASKER

When I restart the apache server now, every thing is okay no error log, but my domain name is still not working! I wonder why all of a sudden this happen?

gb-sdc

Do you have a web browser on the server?

If so, try connecting to http://localhost
If that works, try connecting to http://hostname (while still on the server)

shortandsharp

ASKER

What does the "hostname" command return? it return abc.com without the www. thanks a lot.

gb-sdc

on the server, what happens if you ping abc.com?

Arty K

> When I restart the apache server now, every thing is okay no error log, but my domain name is still not working!

Do you have internal DNS or your domain name is registered somewhere else?
Who owns a DNS server for your domain name?

ASKER CERTIFIED SOLUTION

ahoffmann

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thsteph

Do you have a router on? Have you reset it and left dhcp auto by mistake? Happened to me before

shortandsharp

ASKER

okay this is resolved as I found out that it is my dns server that is down.

thanks a lot!

Arty K

shortandsharp, ahoffman was first who clearly said that's a DNS problem.