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Bug 337 - "unqualified hostname unknown" and "unable to qualify my own domainname"
Summary: "unqualified hostname unknown" and "unable to qualify my own domainname"
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: sendmail
Version: 5.2
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: David Lawrence
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 1998-12-08 01:41 UTC by walt
Modified: 2008-05-01 15:37 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 1998-12-10 15:31:02 UTC

Attachments (Terms of Use)

Description walt 1998-12-08 01:41:35 UTC
I'm running RedHat 5.2, with libc-5.3.12-28.

I'm having problems with sendmail. I used /bin/mail to
try to send messages to "".
Whenever sendmail processes the queue, it logs messages

Dec  7 20:06:05 orbit sendmail[13764]: My unqualified \
host name (orbit) unknown; sleeping for retry

Dec  7 20:07:05 orbit sendmail[13764]: unable to qualify \
my own domain name (orbit) -- using short name

I'm using the stock Other files that might
be of interest are:

/etc/hosts:	loopback		orbit


/etc/nsswitch.conf: (changed lines ONLY)
passwd:     files
shadow:     files
group:      files

hosts:      files dns

I'm using PPP to connect to two ISPs (and plan to add a
third soon). They are "" (my primary ISP) and
"". Because I'm connecting to two, I hesitate
to define either one in the $j macro in
or to specify a smart mail host with DS.

How can I get sendmail to send mail?

Comment 1 Derek Tattersall 1998-12-08 16:46:59 UTC
I cannot really tell from the information that you provided, but the
IP address for orbit ( is what is causing your problem.  This
is not a valid IP address for a machine.  You might want to check
with your ISP to verify that you are using a valid address for orbit.

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