getting message "unable to qualify my own domain name"

[Fernando Acevedo]

I am getting the next message every 10 minutes aproximatelly in a root sesion:
Jan 19 14:18:54 k210 sendmail[29873]: unable to qualify my own domain name (k210) -- using short name

Everything looks to work fine but I want to fix the problem in order to avoid that message.
can anybody helpme

thanks!.

[Mark Greene_1 · Accepted solution]

Check the following:

- the CM setting in the sendmail.cf file containing the correct domain name. This mail actually be point to the file sendmail.cw, which contains the list of domains

- as root, run "mailq -d -v" to see what sendmail is now using for a domain name

- check your resolve.conf file for the correct name resolution order for your location and config syntax

- check your /etc/host file for correct spellings of your domain

mark

[Hoefnix]

It will be fixed by adding your correct hostname and FQname in /etc/hosts

1.1.1.1 hostname hostname.domain.com


Regards,

Peter

[Steven E. Protter]

DNS does not actually answer requests that don't include the network name juf.net in our case

dig servername

provides no answer

dig servername.juf.net

does

You can handle short names with /etc/hosts files

SEP

[Jeff Schussele]

Hi Fernando,

Make sure you have short & FQDN for this host in it's own /etc/hosts file - like:

111.222.111.222 hostname hostname.company.com

As a rule you want the shortname first & the FQDN as the alias

Then make sure the /etc/nsswitch.conf file uses files before DNS.

HTH,
Jeff

[Fernando Acevedo]

The name of the server it is in my etc/hosts file, like

111.222.111.222 k210 k210

the "mailq -d -v" command reports that the mail is using the right server name.

[Fernando Acevedo]

CASE RESOLVED!.

My domain name was only one word like "k210", I changed to "k210.company.com" and it works!. I haven't received the message any more.

thanks to all, I already submit the point.

[Sridhar Bhaskarla]

Hi,

Look at the following excerpt from sendmail.cf

//
My official domain name or Fully Qualified Domain Name - FQDN (Dj): #
# #
# This is required only if sendmail cannot automatically determine your #
# domain. If you are not using DNS, and the official host name (ie, #
# the first entry in /etc/hosts following your IP address) is not a #
# fully-qualified host name, then sendmail will have difficulty resolving #
# your domain name. You MUST modify the $j macro by replacing .Foo.COM #
# with your actual domain name. If you do not, you will see a warning #
# message in your syslog, that might even get echo'd to your console #
# when sendmail starts up. #
# #
# For example, if you see this warning: #
# #
# WARNING: local host name (sys1) is not qualified; fix $j in config file #
#
//

If you have a domain your /etc/hosts will appear like

111.222.111.222 k210 k210.yourdomain.com

If you don't have a domain, then put a dot "." after the second name like this.

111.222.111.222 k210 k210.

Restart sendmail using /sbin/init.d/sendmail script.

-Sri