How to configure Dhcp relay agent

How I can to configure the wrt54g like a dhcp relay agent? please i need help, tell me

A DHCP relay agent is any host that forwards DHCP packets between clients and servers. Relay agents are used to forward requests and replies between clients and servers when they are not on the same physical subnet. Relay agent forwarding is distinct from the normal forwarding of an IP router, where IP datagrams are switched between networks somewhat transparently. By contrast, relay agents receive DHCP messages and then generate a new DHCP message to send out on another interface. The relay agent sets the gateway address (giaddr field of the DHCP packet) and, if configured, adds the relay agent information option in the packet and forwards it to the DHCP server. The reply from the server is forwarded back to the client after removing option .

Similar Messages

Setting up a DHCP relay agent

Hello,
I'm trying to setup a relay agent for an XP client to obtain configuration through 2 routers on a VM LAB
I have 3 Segments/subnets 1,2 and 3
the topology is the following:
1- server 2008 R2 AD DS DC on subnet 1 (192.168.1.0) and a DHCP server with 2 scopes
Internal 192.168.1.0 (subnet1)
external 192.168.3.0 (subnet 3)
2- server 2008 R2 with RRAS installed
Interface 1 pointing to the internal subnet1 192.168.1.0
Interface 2 pointing to subnet2 192.168.2.0
3- server 2003 with RRAS installed
Interface 1 pointing to subnet2 192.168.2.0
Interface 2 pointing to subnet3 192.168.3.0
relay agent installed on Interface 2
(servers/Routers 2 and 3 running RIP v2)
4- XP client on subnet3 (192.168.3.0) and the client trying to obtain config.
The XP client is unable to contact the DHCP to obtain config.
server 2003 relay agent receiving requests with no replies.
How do i get this to work?

Hi,
First, let’s see how DHCP relay agent works:
1. The DHCP client broadcasts a DHCPDISCOVER packet.
2. The DHCP relay agent on the client’s subnet forwards the DHCPDISCOVER message to the DHCP server by using unicast.
3. The DHCP server uses unicast to send a DHCPOFFER message to the DHCP relay agent.
4. The DHCP relay agent broadcasts the DHCPOFFER packet to the DHCP client’s subnet.
5. The DHCP client broadcasts a DHCPREQUEST packet.
6. The DHCP relay agent on the client’s subnet forwards the DHCPREQUEST message to the DHCP server by using unicast.
7. The DHCP server uses unicast to send a DHCPACK message to the DHCP relay agent.
8. The DHCP relay agent broadcasts the DHCPACK to the DHCP client’s subnet.
We can see in the second step, DHCP relay agent send unicast to DHCP server after receiving DHCP request. So confirm unicast communication between DHCP server
and DHCP relay agent works fine. At least ping should be working. You can use the following commend to add the route entry.
Add a static IP route
http://technet.microsoft.com/en-us/library/cc757323(v=ws.10).aspx
The result should be based on your test. If it doesn’t work it just indicates that we cannot configure another DHCP relay agent behind a relay agent.
Hope this helps.

How to configure DHCP in Hyper-V

Hi
Recently I have created 2 Hyper V nodes in Windows 8. One is windows server 2012 and second one is windows 8.
My Question is :
How can I configure DHCP in server 2012 that can provide IP address to windows 8 . I have made win server 2012 a domain controller and also installed DHCP role.
PLZ HELP!!!!!!!!

As Ryan has said in his reply, there's nothing different to setting up DHCP in a Hyper-V VM as there is on a physical host.
If you've not done this in 2012 (R2) before then you may be missing the notification in Server Manager after the install notifying you that there is post installation tasks for DHCP to complete.
I suggest you read the information at the link Alexey posted as there information to take you through step by step.
The link again:
http://blogs.technet.com/b/keithmayer/archive/2012/11/26/configuring-dhcp-in-windows-server-2012-early-experts-challenge-exam-70-410.aspx
Direct step links:
Authorize a DHCP Server
Create and configure scopes
Configure a DHCP reservation
Configure DHCP options
Configure a Client and Server for PXE Boot (BOOTP)
Configure IPv4 DHCP Relay Agent
Configure IPv6 DHCP Relay Agent
Regards,
Steve
My System Center Blog

Windows DHCP Server and Linux DHCP Relay Agent

We are trying to organize a VLAN (say VLAN 1) for guests who must be assigned IP addresses from a DHCP server in a different VLAN (VLAN 2). This DHCP server is configured with two scopes - 172.16.0.0/24 (for VLAN 2) and 172.16.4.0/24 (for the Guests
VLAN 1). The DHCP server successfully distributes addresses to clients in its VLAN (it has the IP address 172.16.0.2). For the clients in the other VLAN a DHCP Relay Agent has been setup on the router. It is DHCRELAY running on Linux (CentOS) which has
been configured to accept the DHCPDISCOVER broadcasts coming on the VLAN1 interface of the router and forward these to the DHCP server. The IP address of the VLAN1 interface of the router is 172.16.4.254 and on the VLAN2 interface - 172.16.0.254
The problem is that the DHCP server won't respond with a DHCPOFFER message to the relay agent. I have traced the frames on the router and on the DHCP server. They arrive on the DHCP server with the correct GIADDR of the relay agent. According to all documentation,
if a scope has been configured on the DHCP server and it receives a unicast message with the GIADDR set by a relay agent that matches one of the configured scopes, the DHCP server must send a unicast DHCPOFFER to the relay agent. But it doesn't.
Here is what Wireshark reports (ignore the Destination port unreachable messages, the DHCP service was stopped at the time Wireshark was running)
When the service is running, there are just DHCPDISCOVERs - no OFFER. You can see that the server has the two scopes configured:
The relay agent seems to work normally - it forwards the DHCPDISCOVERs to the server continuously (tried many times with ipconfig /renew on the client).
I read many posts about this problem. Some users had other services running on the DHCP server that used the DHCP port, but I don't have such an issue (you see that when the service is stopped, an ICMP port unreachable is sent which is correct). Others however
did not find a solution. Am I missing something? Is there something specific when using the DHCRELAY agent from DHCPD? Can I turn on some verbose logging to track this down? Thanks in advance.

WIth DHCP, there is really nothing to configure. If the Relay Agent/IP Helper is pointing to it, and the VLAN subnet exactly matches the scope subnet, then it should just work.
What I've seen in the VLAN config is either a static route back to the subnet the DHCP server itself is sitting on is not configured or incorrectly configured, or there are ports blocked (need UDP, too, since that's what DHCP uses to pass the OFFER), and
other necessary ports are opened, then it should just work.
Sometimes NIC teaming on the DHCP server will cause it. Not sure. Microsoft doesn't support teaming prior to Windwos 2012, but it doesn't mean that it doesn't work. Don't get me wrong, teaming works nicely, but they just don't support it because they never
certified the drivers, that's all.
The issues I've seen with DHCP relays and VLANs in the forums are usually based on misconfigs in the VLAN or ports blocked. Sometimes we'll refer to call Microsoft Support for specific, hands-on assistance. And searching the threads, from what
I've found that if they did call support, they've never posted back what the problem was based on or the resolution. I can post a couple of them for you to read through, but there were never any response with the actual resolution.
If you like, you also have the option to contact Microsoft Support. Here's a list of phone numbers if you choose this option:
http://support.microsoft.com/contactus/
Ace Fekay
MVP, MCT, MCITP/EA, MCTS Windows 2008/R2 & Exchange 2007, Exchange 2010 EA, MCSE & MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services
Technical Blogs & Videos: http://www.delawarecountycomputerconsulting.com/
This post is provided AS-IS with no warranties or guarantees and confers no rights.

How to Configure Multiple Relays / Mail Gateways

Platform: Sun Solaris 8
Software: iMS 5.2
How to Configure two MX ( relay / Gateway servers) records in imta config file..? Our requiorement is to have two gateways defined ..for example "xyz.net" and "xyz.com". All emails destined to email addresses ending with ".net" should use the "xyz.net" gateway and rest of them should use the "xyz.com" gateway. and the configuration should be flexible enopugh to accomodate future additions to our gateways.
An Early Response would be appriciated.
Thanks
Arun Addepalli

Well, To point the outside mail servers to your gateways just put MX entries for each domain into DNS and point dns to the correct host for that domain.
To make the mail server recognize the domain just create it in the ida and put the users under that domain. The users mailhost attribute will take care of letting the gateways know where to forward the mail so it will go to the correct host.
If you need to do domain aliasing with the same users for both domains that is a bit different. Do you need to do this?

How to configure dhcp client identifier

Hi Everybody,
The DHCP client ID is an id that is unique for DHCP clients at least in the same subnet. Usually the client uses MAC-address as Client-Identifier in the DHCPDISCOVER message. The Client-Identifier may be different other than MAC-Address, For example a FQDN name, as per the RFC 2132 Ref, (code 61).+_
Usaually, we use the following to bind the ip address based on MAC-address
pntadm -r SUNWfiles -p /var/dhcp -A 10.42.32.86 -i '0:3:ba:a5:a9:93' -a 10.42.32.80
At server side, I am using the following for specifying the FQDN name.
pntadm -r SUNWfiles -p /var/dhcp -A 10.42.32.86 -i 'one.atr.com' -a 10.42.32.80
and at client side, I am inserting the following entry in the /etc/default/dhcpagent file
CLIENT_ID='one.atr.com'
But this is not working. What I am doing wrong.
+1. At the server side, then how to assign the ip addresses to the clients , if the Client-Identifier is FQDN name in the DHCPDISCOVER message other than MAC-Address.+
+2. How to configure the client-identifier as FQDN name at client side.+
Please help me,
Thanks Inadvance,
Mummaneni.

Sandman,
Here is an example of a router acting as a DHCP server. Please remember that you have to exclude IP addresses that you don't want to lease out.
ip dhcp pool example
import all
network 192.168.1.0 255.255.255.0
dns-server 1.2.3.4
default-router 192.168.1.1
ip dhcp excluded-address 192.168.1.1 192.168.1.149
ip dhcp excluded-address 192.168.1.200 192.168.1.254
HTH,
Mark

How to Configure DHCP/NAT in Time Capsule

Assuming I can get my Comcast Cable model to act as a bridge, I see advice for setting up my Time Capsule as a DHCP/NAT.
On the Comcast Cable modem:
WAN IP address = 174.13.188.121. <- fake IP
WAN IP gateway = 174.13.188.122.
WAN subnet mask = 174.13.188.122.
LAN IP address = 10.1.10.1.
LAN subnet mask = 255.255.255.0.
I'd like to use 10.1.10.11 for Time Capsule, 10.1.10.13 for Mac Mini Server, 10.1.10.17 for iMac#1 and 10.1.10.19 for iMac#2.
But nooooooo. The AirPort Utility offers only the following DHCP Ranges:
10.0.1.3 - 10.0.1.200, or
176.16.1.3 - 176.16.1.200, or
192.168.1.3 - 192.168.1.200
There's a checkbox for "Enable NAT Port Mapping Protocol," but the documentation on it is poor. There's also a checkbox for "Enable default host at: 10.0.1.253, or 176.16.1.253 or 192.168.1.253," but its documentation is equally poor. Apparently Apple didn't see the need to explain how these things work.
If I use a LAN IP of 10.0.0.1 for the Comcast Cable Modem, then use AirPort Utility to set a DHCP Range of 10.0.0.3 to 10.0.0.200 I receive a warning message that "The DHCP range you have entered conflicts with the WAN IP address of your base station."
I don't see the conflict -- what is wrong? Better yet, how do use AirPort Utility to set up Time Capsule?

Thank you for your response, but I remain completely overwhelmed by this mess. What should be something simple has become an enormous task.
Internet
^
Cable Modem WAN IP: 174.13.188.121 (fake IP address)
   Subnet Mask WAN: 255.255.255.252
Cable Modem LAN IP: 192.168.0.1
    Subnet Mask LAN: 255.255.255.0
I'd like all requests to my public static IP 174.13.188.121 to be served up from my Mac Mini Server with private static IP 192.168.0.19.
   Time Capsule IP: 192.168.0.11
Mac Mini Server IP: 192.168.0.19 running Server.app
iMac #1 Client IP: 192.168.0.17
iMac #2 Client IP: 192.168.0.13
I want the Server.app to serve the public. The above is what I have configured now. Some behavior is odd. For example, I can access the internet from the iMac clients but not the Mac Mini Server. I don't know why.
In other words, how do I string together my Comcast Cable Modem, Time Capsule, Mac Mini Server, iMac#1 and iMac#2 into a useful LAN that can browse the Internet and provide FTP and Web service?
I would think this is a common setup with several sample setups available on the web. No such luck.

How to configure DHCP on linux jumpstart for solaris installation

I have configured jumpstart on linux and able to install solaris on SUN sparcs
using rarp and bootparams files.now im trying to use linux DHCP for solaris clients. I have the done the DHCP setup on linux using this doc http://www.sun.com/bigadmin/content/submitted/setup_dhcp.jsp.
but when im trying to boot the sun spac client with boot net:dhcp - install command it is failing with error "panic - boot: Could not mount filesystem.
Program terminated". exports file is ok and NFS service is also running.
Please help me on this issue.
Thanks in advance.
Shashi

Darren,
Thanks for the response.
I tried to install client60001dev (sparc client) from server60060pxe (linux jumpstart) as follows
client60001dev is able to get the IP address from server60060pxe DHCP and then the boot file also, but after that the client is not showing any NFS queries.
{0} ok boot net:dhcp - install
Boot device: /pci@1f,4000/network@1,1:dhcp File and args: - install
Using Onboard Transceiver - Link Up.
Timeout waiting for BOOTP/DHCP reply. Retrying ...
Timeout waiting for BOOTP/DHCP reply. Retrying ...
2aa00
Server IP address: xx.xx.xx.119
Client IP address: xx.xx.xx.111
Subnet Mask : 255.255.255.0
Using Onboard Transceiver - Link Up.
panic - boot: Could not mount filesystem.
Program terminated
tcpdump on server60060pxe
03:16:12.292836 IP server60060pxe.42445 > client60001dev.20759: UDP, len
gth 516
03:16:12.303646 IP client60001dev.20759 > server60060pxe.42445: UDP, len
gth 4
03:16:12.303669 IP server60060pxe.42445 > client60001dev.20759: UDP, len
gth 516
03:16:12.314479 IP client60001dev.20759 > server60060pxe.42445: UDP, len
gth 4
03:16:12.314501 IP server60060pxe.42445 > client60001dev.20759: UDP, len
gth 516
03:16:12.325313 IP client60001dev.20759 > server60060pxe.42445: UDP, len
gth 4
03:16:12.325347 IP server60060pxe.42445 > client60001dev.20759: UDP, len
gth 516
03:16:12.336158 IP client60001dev.20759 > server60060pxe.42445: UDP, len
/var/log/messages on server60060pxe
Feb 26 03:15:35 server60060pxe dhcpd: DHCPDISCOVER from 08:00:20:fe:4a:23 via eth0.
369
Feb 26 03:15:35 server60060pxe dhcpd: DHCPOFFER on xx.xx.xx.111 to 08:00:20:fe:4
a:23 via eth0.369
Feb 26 03:16:08 server60060pxe dhcpd: Dynamic and static leases present for 139.185
.168.111.
Feb 26 03:16:08 server60060pxe dhcpd: Remove host declaration client60001dev or remove
139.185.168.111
Feb 26 03:16:08 server60060pxe dhcpd: from the dynamic address pool for xx.xx.xx
/24
Feb 26 03:16:08 server60060pxe dhcpd: DHCPREQUEST for xx.xx.xx.111 (xx.xx.xx.
119) from 08:00:20:fe:4a:23 via eth0.369
Feb 26 03:16:08 server60060pxe dhcpd: DHCPACK on xx.xx.xx.111 to 08:00:20:fe:4a:
23 via eth0.369
Feb 26 11:16:09 server60060pxe in.tftpd[10266]: RRQ from xx.xx.xx.111 filename 8
BB9A86F
Feb 26 03:22:00 server60060pxe kernel: eth0.369: dev_set_promiscuity(master, -1)
Feb 26 03:22:00 server60060pxe kernel: device eth0 left promiscuous mode
Feb 26 03:22:00 server60060pxe kernel: device eth0.369 left promiscuous mode
Shashi

DHCP relay agent on 1941w

I have a 1941W and an external DHCP server. Wireless clients should get their IPs the same way when they are wired. I have checked the documentation but no help. Someone share such a document or help on how it can be done.

still no luck
Thanks for the video..lets me check it out.
on the ap:
dot11 syslog
dot11 ssid TEST
   vlan 600
   authentication open
   authentication key-management wpa version 2
   guest-mode
   mbssid guest-mode
   wpa-psk ascii 0 fortest1
username Cisco password 7 02250D480809
bridge irb
interface Dot11Radio0
no ip address
no ip route-cache
encryption vlan 600 mode ciphers aes-ccm
ssid TEST
antenna gain 0
mbssid
station-role root
interface Dot11Radio0.1
encapsulation dot1Q 1
no ip route-cache
interface Dot11Radio0.100
encapsulation dot1Q 100
no ip route-cache
interface Dot11Radio0.101
encapsulation dot1Q 101
no ip route-cache
interface Dot11Radio0.600
encapsulation dot1Q 600 native
no ip route-cache
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
interface Dot11Radio1
no ip address
no ip route-cache
shutdown
antenna gain 0
no dfs band block
channel dfs
station-role root
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
interface GigabitEthernet0
description the embedded AP GigabitEthernet 0 is an internal interface connecting AP with the host router
no ip address
no ip route-cache
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
interface BVI1
ip address 10.60.60.10 255.255.255.0
no ip route-cache
on the router
interface Embedded-Service-Engine0/0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
interface GigabitEthernet0/0
description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-GE 0/0$
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
duplex auto
speed auto
no mop enabled
interface GigabitEthernet0/0.100
encapsulation dot1Q 100
ip address 10.58.194.2 255.255.255.224
ip helper-address 10.58.193.33
interface GigabitEthernet0/0.101
encapsulation dot1Q 101
ip address 10.58.194.66 255.255.255.224
ip helper-address 10.58.193.33
interface GigabitEthernet0/0.104
encapsulation dot1Q 104
ip address 10.58.193.2 255.255.255.192
ip helper-address 10.58.193.33
interface GigabitEthernet0/0.600
encapsulation dot1Q 600
ip address 10.60.60.2 255.255.255.0
ip helper-address 10.60.60.1
interface wlan-ap0
description Service module interface to manage the embedded AP
ip unnumbered GigabitEthernet0/0.600
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
arp timeout 0
no mop enabled
no mop sysid
interface GigabitEthernet0/1
ip address dhcp
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
duplex auto
speed auto
no mop enabled
interface Wlan-GigabitEthernet0/0
description CONNECTION_TO_AP
switchport mode trunk
no ip address
interface Vlan1
no ip add

How to replace DHCP server from domainA with DHCP from domainB?

Hello fellow Administrators,
We have one remote site with one subnet. There's domainA domain controller and about 100 domainA's client computers in that subnet. We're about to send 100 domainB's client computers there as well.
There's also domainA's DHCP server running on the same subnet. DHCP scope options include domainA's domain name, gw and domainA's DNS server addresses.
DomainA and DomainB belongs to separate forests and there's two-way trust between them. DomainA DNS has stubzone for DomainB and DomainB has stubzone for domainA. That's how
clients can resolve hostnames of other domain.
All domainA's clients in remote site will be replaced gradually with domainB's client computers, but this can take a long time.
I want to note, that I cannot create second subnet for domainB at the moment.
At some point, we need to deploy DHCP server to domainB's member server in the remote site. What are the steps I should take to replace existing domainA's DHCP server with domainB's DHCP server while still allowing clients from domainA and domainB to successfully
find domain controller of their own domain and being able to resolve hostnames from both domains?

When the devices on your network first request an IP address or reach the end of their leases (or you force them to check their lease is still valid) they will simply
broadcast a request for a DHCP server, and will accept an offer from the first DHCP server
to reply.
Multiple DHCP servers PT 1: Spanning multiple subnets.
If you have several VLANs or physical network segments that are separated into different subnets, and you want to provide a DHCP service to devices in all those subnets then there are two ways of doing this.
If the router / layer 3 switch separating them can act as a BOOTP/DHCP relay agent, then you can continue to keep all your DHCP server(s) in one or two central parts of your network and configure your DHCP server(s) to support multiple ranges of addresses.
In order to support this, your router or layer 3 switch must support the BOOTP relay agent specification covered in section
4 of RFC 1542.
If your router does not support RFC 1542 BOOTP relay agents, or if some of your network segments are geographically dispersed over slow links, then you will need to place one or more DHCP server in each subnet. This ‘local’ DHCP server will only serve its own
local segment’s requirements, and there is no interaction between it and other DHCP servers. If this is what you want then you can simply configure each DHCP server as a standalone server, with the details of the address pool for its own subnet, and not worry
about any other DHCP servers on other parts of the network. This is the most basic example of having more than one DHCP server on the same network.
http://www.arabitpro.com

Relay Agent Information(option82) :windows server 2012

Hi,
I am trying to integrate a wireless AP which have option82 inbuilt and act as DHCP relay agent ; but I don't know where to find the relay agent information(the hexa decimal value for the AP). If any one know where to find or how can I get this relay agent
information(hexdec value of the AP) will be very help full.

Hi,
There might be some misunderstanding.
Option82 is not necessary for DHCP relay. It is used for DHCP policy in windows server 2012. Since this option is
inserted by a DHCP relay agent, the relay agent information should be set on the DHCP relay agent.
The relay agent information which you configure in the windows DHCP server is used to recognize the relay agent. Then DHCP server can
give customized IP address and configuration options using this option.
How to get the relay agent information
may vary from product to product. You should contact your AP vendor or manufacturer.
Besides, the DHCP Relay Agent is compliant with RFC 1542, "Clarifications and Extensions for the Bootstrap Protocol.". You may refer to the link below,
Clarifications and Extensions for the Bootstrap Protocol
http://tools.ietf.org/html/rfc1542#page-13
Notice: The relay agent information which is configured on relay agent may not be
hexadecimal value, you may converse it into
hexadecimal value.
Hope this helps.
Steven Lee
TechNet Community Support

SRP 527W - DHCP Relay?

I know how to disable the DHCP on the SRP527W but i was wondering how do i configure DHCP relay to point to a network DHCP server
Regards

Alex
Unfortunately DHCP relay is not supported on SRP527W.
Regards
Rogelio

ASA 5512-X - VPN & local clients DHCP relaying (DHCP Proxy vs. DHCP Relay conflict)

Hey all,
I have ASA-5512-X serving as general firewall/router. It also serves as AnyConnect SSL VPN gateway (webvpn).
It has ~10 VLANs connected over 1 trunk port. One of the VLANs has DHCP server that shall serve all the VLANs (192.168.16.2).
I'm trying to have the ASA relay DHCP requests from all VLANs to the DHCP server and to also serve VPN clients.
However, according to bug https://tools.cisco.com/bugsearch/bug/CSCsd22469 both DHCP Proxy (webvpn) and DHCP Relay (local interfaces) can't be enabled at the same time.
As VPN clients connect to the same VLANs as local users (eg. VLAN 2 - 192.168.2.0/24) I want to have the very same DHCP server serving both, otherwise it's gonna become a mess.
Note: if I configure DHCP Relay functionality and disable DHCP Proxy - local clients are served fine. If I configure DHCP Proxy (webvpn) and disable DHCP Relay VPN clients are served fine. I therefore consider setup to be correct, just the ASA limitation won't allow me to make it serve both.
Can DHCP Relay also serve VPN clients (no DHCP Proxy enabled)? did I miss something?
Thanks!

Hi,
The only workaround for this issue is to configure the ASA itself to act as DHCP server for vpn clients. You also have the flexibility of using local pool and AAA server. Why exactly do you want to use the same DHCP server for both?
AM

Configuring SMTP Relay Restrictions

Hi,
As i know in Exchange server 2003 For a user or computer to relay e-mail messages through an SMTP virtual server, the following two conditions must be met:
The user or computer can access the SMTP virtual server. (Connection control)
The SMTP virtual server is configured to relay e-mail messages to other domains. (Relay restriction)
my question is: in Exchange 2010 there is only relay restriction, what about connection control? how to manage users or computers who can access the smtp?
thanks,

Hi,
You can create a new Receive Connector and bind the computers that you want to allow relaying in it...
http://exchangeserverpro.com/how-to-configure-a-relay-connector-for-exchange-server-2010/
Blog |
Get Your Exchange Powershell Tip of the Day from here

How to configure windows services alerts in SCOM 2012 for all agent servers. For eg, Terminal Services, Netlogon, RPC etc..

Hi,
I need to configure different windows services alerts in SCOM 2012. Below are some of the windows services I need to monitor through SCOM.
Serivce: Windows Management Instrumentation
Service: Netlogon
Service: Remote Procedure Call (RPC)
Service: Server Service
Service: Terminal Services
Service: Windows Time
Service: Workstation
Service : WWW Publishing Service
Could some one please assist or share me the details, how to configure these services for windows agent servers.
Thanks..
Regards, Rajeev Parambil

Hi,
A certain set of services are monitored by default on all agents:
DNS Client
DHCP Client
RPC
Workstation
Server
For all the other services you could create a service monitor.
A nice blog series outlining this process can be found here: http://www.bictt.com/blogs/bictt.php/2011/03/16/scom-monitoring-a-service-part1
It's doing common things uncommonly well that brings succes. Check out my SCOM link blog:
SCOM link blog

How to configure Dhcp relay agent

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