Looking for some advice, I'm pulling my hair out trying to figure this out! Running Redhat (CentOS) with fairly normal configuration and I've disabled the firewall for now.

I have a web server which has worked wonderfully in the following setup:

Server IP: 10.0.0.10
Firewall/Router: 10.0.0.1

I port forward our public facing IP address part 80/443, lets say 72.94.30.30, to the .10 internal IP and it works great.

However I recently had the need to add a second SSL site, so I needed a new external IP, which I have from the ISP. I added a second NIC to the system, eth1 with a "public" ip of 72.94.30.31. The gateway for this external IP is now 72.94.30.1, which is the same as the firewall/router. Now the system wants to route everything through eth1, rendering the first website (and interface) disabled.

Now I need to set up static routes, but can't seem to get it to do what I want. Basically I want:

Incoming Traffic from 72.94.30.30 to be forwarded to 10.0.0.223 by the firewall/router (already done), return traffic to go through 10.0.0.1 on eth0.

Incoming Traffic from 72.94.30.31 to be served straight up, routed through 72.94.30.1 on eth1.

Any tips on the correct setup?

Right now I have

cat ifcfg-eth0

DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=10.0.0.10
NETMASK=255.255.255.0
GATEWAY=10.0.0.1

cat ifroute-eth0

default 10.0.0.1 dev eth0
10.0.0.0/24 via 10.0.0.1 dev eth0

cat ifcfg-eth1

DEVICE=eth1
ONBOOT=yes
BOOTPROTO=static
IPADDR=72.94.30.31
NETMASK=255.255.255.0
GATEWAY=72.94.30.1

cat route-eth1

default 72.94.30.1 dev eth1
72.94.30.30/32 via 72.94.30.1 dev eth1

ip route

72.94.30.31 via 72.94.30.1 dev eth1 
72.94.30.30 via 10.0.0.1 dev eth0 
10.0.0.0/24 dev eth0  proto kernel  scope link  src 10.0.0.10 
72.94.30.0/24 dev eth1  proto kernel  scope link  src 72.94.30.31 
169.254.0.0/16 dev eth1  scope link 
default via 72.94.30.1 dev eth1 

This results in 72.94.30.31 traffic working fine, but the other interface is knocked offline.

Any help is appreciated!

In our offices we have a very strong cell phone signal above ground, however in our conference room in the basement, Verizon & Sprint have almost no coverage (while AT&T works, it is 1 or 2 bars vs full bars above ground).

We are looking into purchasing a cell phone booster, to bring in the signal from outside the building into the basement. The main receiver would be installed and powered in the center of a 4000 sq foot space, and the antenna would be located roughly 50 feet away to bring in the signal.

My question is - do these cell phone extenders, such as the zBoost brand, work well? We have everything from regular voice, blackberries and internet cards which would be using this signal. The 'coverage' area of this boosters does not seem to be that wide, I am guessing the internal booster uses a low power so that it does not interfere with the regular signal.

Are there any 'commercial' solutions to this problem and who would I contact to price them out? I am not sure who to even call about this one.

Thanks in advance.

My non-profit association has an Exchange server and a ListManager server to handle announcements to our members (about 800 email addresses) and several low-traffic discussion listservs.

On the incoming side, we run Postini to filter all incoming spam, with some Spamassassin locally to catch the rest that Postini misses.

There is an issue where some of the mails we send out via our ListManager install are being flagged as spam in Postini, whereas some others get through. There doesn't appear to be a rhyme nor reason to which one it blocks and which it allows through. My guess is that we are right on the "threshold" of spam and some terms we use in the emails push it over the edge. 99% of emails are accepted by the server, but I suspect some services are silently throwing the messages out or placing them in spam folders.

So my question is: What are some guidelines to getting the best deliverability of these messages?

Some facts about our particular setup:

• We have 2 internal servers (one Exchange, one Listmanager), however both send email out using the same IP address.
• The MX record for incoming mail at our domain, and what most messages are sent out as (via [email protected]), is mx.mydomain.org. This is set up as the PTR entry for our IP address.
• Our ListManager is set up to use [email protected] as the from address, however it uses Return-Path: [email protected] to track bounce messages.

• We have SPF set up for our main domain:

  v=spf1 ip4:72.X.X.234/30 a:lists.mydomain.org mx:mydomain.org mx:lists.mydomain.org ?all

• We are on the five-ten spam blacklist, I think they have us blocked because we are on Verizon with a static IP, and some folks block all of VZ.

Is there anything I am missing that should be set up to maximize the deliverability of our messages? Can we work with any of the big "whitelists" to help with this? What do the "big" mailers use? I have some thoughts but wanted to check with the experts here.

Thank you in advance for your responses!

I set up ZFS on Ubuntu (via fuse) for a storage array at home and it has worked great for almost a year now, despite its 'beta' status. I log in and check the array every once in a while using:

zpool status

Which results in:

NAME        STATE     READ WRITE CKSUM
media       ONLINE       0     0     0
  raidz1    ONLINE       0     0     0
    sda     ONLINE       0     0     0
    sdb     ONLINE       0     0     0
    sdc     ONLINE       0     0     0
errors: No known data errors 

This is all fine, but I'd like to automate a way to check every once in a while to make sure my pool is error-free.

I have cacti, and zabbix available at my disposal. I suppose I could also write a program that greps that output and if it doesn't find the phrase "No known data errors", send me an email.

However, is there any package already made that does this, or specifications on how I can get some performance metrics from this array?

We have a client who needs to set up 2 Class C (/24) address ranges in Ubuntu. We have a single nic connected to the switch currently and the IPs are set up at the switch.

We have done this many times in RedHat based systems by using the IPADDR_START and IPADDR_END options in the ifcfg file such as this:

IPADDR_START=192.168.0.1
IPADDR_END=192.168.0.254

However this does not appear to be an option in Ubuntu. You have to set them up individually like so:

auto eth0:x
iface eth0:x inet static
address [IP ADDRESS]
netmask 255.255.255.0

Which is fine to shell script the creation of this file. But, I understand 'x' can only go up to 256 which would only allow one class C.

Does anyone know how we can add multiple class C ips to a single nic?