mail not quite working right

mail not quite working right

Post by Henry Hartl » Tue, 29 Jul 1997 04:00:00

I've gotten a server set up and I thought I had DNS working (it mostly
does) but one thing isn't right yet.  I want a user's address to be

I could use that but I'd rather not.  Is this a DNS issue or a
sendmail issue?  What did I do wrong (or more likely, what did I not

Henry Hartley


1. DHCP SERVER not working quite right? (RH6.0)

I'm trying to get the DHCP server from working on my Red Hat 6.0
system.  I've installed the RPM from the RH6 CD and created
/etc/dhcpd.conf and /etc/dhcpd.leases.  Here is what my dhcpd.conf file
looks like:

subnet netmask {
  default-lease-time 14400;
  max-lease-time 28800;
  option subnet-mask;
  option broadcast-address;
  option routers;
  option domain-name-servers;
  option domain-name "houchen.home"

host genesis {
  hardware ethernet 00:e0:98:04:ce:4a;

I have one client (Win95) that I want to have the same IP each time it
requests an address -- the one with the MAC address in the "host
genesis" section.  Here is the problem:  The Win95 machine gets
without any problem and everything works great.  But if I do a "release"
on the Win95 machine, kill dhcpd, remove the leases file(s), change
dhcpd.conf to reflect a DIFFERENT MAC address, and restart the dhcpd
daemon, the Win95 machine will pick up again when I "renew"!
If I put in the correct MAC address and change fixed-address to
(for example) and restart everything the Win95 machine will pick up the address as expected.  Then, when I change the MAC address to
something else to try to reserve for a different machine, the
Win95 machine will again pick up the address.

To summarize the problem... if I have the Win95 machine's correct MAC
address in the host section, the fixed-address will be assigned
properly.  But I can't get the Win95 machine to pick up a different IP
by assigning its current IP to a different MAC address, even if I remove
the leases files, restart the dhcpd daemon, and reboot the Win95

What am I doing wrong, and what other experiments should I try?  (I have
tried rebooting the Win95 machine between each MAC address change, with
the same results.  I also get these results if I use the final version
of DHCP 2.0 from, instead of the beta version that shipped
with RH6.0.  I have also tried changing the host line to read "host foo"
instead of "host genesis".)  If you think what I'm doing should work the
way I think it should, please give me a scenario to try...


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