Re: mail confusion
From: Derek Martin (code_at_pizzashack.org)
Date: 10/30/05
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Date: Sun, 30 Oct 2005 12:06:04 -0500 To: jaymo@mail.bokler.com, For users of Fedora Core releases <fedora-list@redhat.com>
On Sun, Oct 30, 2005 at 04:03:29AM -0600, Jay Moore wrote:
> The problem is that the from: address "mail" is using is bogus:
> "root@localhost.localdomain" Problem is that I don't know *where*
> mail is getting this address. Following is the error message:
Well, it's not exactly bogus... It's what your machine is configured
to use. :)
The problem is that the hostname of your system is
localhost.localdomain as determined in /etc/hosts and/or
/etc/resolv.conf and/or /etc/sysconfig/network, and smartd is running
as root, so it will send mail out as root@localhost.localdomain. This
is normal and expected.
You need to do one of the following:
- change the hostname of your machine to something in a real domain
- configure sendmail to masquerade your hostname/domain AND get rid
of root as an "exposed user"
- stop trying to send mail to legitimate Internet hosts from an
illegitimate Internet host. ;-)
Probably the easiest thing to do is to change your hostname, but
you'll have to pick some existing domain name to use. You'll need to
change localhost.localdomain to your new hostname in all 3 of the
locations I mentioned, except that you need to keep the following in
/etc/hosts:
127.0.0.1 localhost localhost.localdomain
The entry for "localhost" is required for TCP/IP networking to work
properly, and Red Hat has configured some of its software to use
"localhost.localdomain" (which I always thought was brain-damaged), so
you'll need that in there as well.
Let's say you choose the name myhost.mydomain.com as your new host
name. If you have a static IP address, you can just add a line to
/etc/hosts with the new name and your IP:
127.0.0.1 localhost localhost.localdomain
10.0.0.1 myhost.mydomain.com myhost
Otherwise if you get your Internet-facing IP address via DHCP, you'll
want to add the name to the end of the 127.0.0.1 line, like this:
127.0.0.1 localhost localhost.localdomain myhost.mydomain.com myhost
After fixing the other two files, replacing any instances of
localdomain with mydomain.com and instances of localhost.localdomain
with myhost.mydomain.com, you should be all set.
One other possibility is that you may have to change your sendmail
configuration even if you do this. In /etc/mail/sendmail.mc, you may
have a line that says this:
LOCAL_DOMAIN(`localhost.localdomain')dnl
You'll probably need to change that too, and then run "make" in
/etc/mail, then restart sendmail. If you have that line in
/etc/mail/submit.mc as well, you'll probably need to change it there
too.
HTH
-- Derek D. Martin http://www.pizzashack.org/ GPG Key ID: 0x81CFE75D -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
- Previous message: ha haha: "what is the Maximum Swap partition size and useful size ???"
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