MacBook Air :: Unable To Get IP Address From DHCP Server

Jan 9, 2011

I've recently purchased my first Mac (the new 13.3 inch air model). I seem to be having a bit of a problem with wireless networking, though. It seems that my Mac will reconnect to my wireless network perfectly after resuming from sleep mode just fine for a few days, but after those few days, it will mysteriously stop being able to get an IP address from the DHCP server (my wireless router). My PC is able to connect to the network just fine and always seems to be able to get a new address, but the Mac just loses the ability. I have found that the only way I can get the Mac to start grabbing an IP address from the router is by going into the router settings and changing the RIP mode to a value other than what it currently shows. I generally try to stay in RIP_2B mode, but I change it to some other random value whenever it stops connecting.

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OS X Server :: Unable To Use DHCP With Windows XP

Jun 29, 2005

I have a Mac OSX Server (10.4) connected to a switch with various Airport Express terminals around the place. Macs can connect to the network wirelessly (with 128 bit WEP) and WIRED totally fine... but when I try and connect a windows PC either using wireless or WIRED... an IP address isn't assigned. Windows just says "Limited or no connectivity"...

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OS X Server :: DHCP Grab My New Addresses

Mar 8, 2007

The service shows running but will not give an IP address to Mac or PC. As the leases are running out on the machines they are not being renewed. I restarted the service and then the server. Then I reset the DHCP Client list.I turned on a computer lab so that they would all grab a new address.... none of them did. I logged on to a computer and told it to renew its DHCP address and nadda. If i assign a static ip they are fine

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Lion Server NAT Destroying DHCP

Mar 29, 2012

I have recently purchased a USB Ethernet adapter so I can setup NAT on lion server that runs on a MacBook. I was shocked when it blew away my DHCP Config after I set up NAT, but I stuck with the scope it chose and added the correct DNS and gateway settings.Whenever I start DHCP now, the logs tell me the Config cannot be found, and it blows away all of my modifications to DHCP. On top of that, it won't hand out any addresses.If I stop DHCP, the system logs start telling me that "natpmpd" has started, and then it begins to hand out addresses. The problem with this is, I can't make any changes to the DHCP settings it uses, which means my clients are now getting the incorrect settings for the gateway and DNS.Also, when I modify the Scope with DHCP stopped, the logs tell me it cant update the subnet because it was not found.

MacBook, Mac OS X (10.7.3)

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Mac OS X Lion Server :: Get DHCP To Update DNS?

Apr 14, 2012

I have setup OS X Lion server to act as the DHCP and DNS server for my local network. DHCP provides gateway address and the local DNS server address.   DNS is set to forward to my ISP DNS servers. 'A' records and 'PTR' records have been created for the various servers on the network and I am able to resolve the servers via dig by name and address. I can also access the internet without issue. DHCP is handing out IP addresses to Windows clients on the network but I am unable to locate the machines with DHCP addresses in DNS either by IP address or FQDN. The windows clients are able to access the internet without issue. Looking at the DNS log there does not appear to be anything recorded when the DHCP address is allocated. Is there something special that needs to be setup either in DHCP or DNS that will allow DHCP to record the host and address details in DNS?

Mac mini, Mac OS X (10.7.3)

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Hardware :: Airport DHCP Fails To Get Address (Mac On Windows Network)?

Jun 7, 2006

I am a comitted Mac switcher trying to put my lovely new MacBook onto the office Windows network. I can connect to the office wireless network (WEP key etc) and the little radar Icon in the menu bar lights up. However, I cannot get the MacBook to obtain an IP address via DHCP. I just keep getting the default self assigned address (169.....).

However, when I connect to the network via a cable using the built in ethernet connector, I get the DHCP address just fine and everything works OK.Also, if I assign an IP address manually to the wireless card (checking it is a free address!) it accepts the settings but I cannot network, not even a basic ping of another machine on the local internal network (all our internal machines are using 10.0.0.x addresses and sub net)The DHCP server is not in the wirless router but is a Windows server machine.This is driving me crazy. I have called Apple care and they just dont want to know because there is a Windows machine in the mix. I expected better from them,

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Mac OS X Lion Server :: Email Address Requires Host Name In Address Field

May 5, 2012

I'm trying to setup mail on Lion Sever (7.3). The only way I can get it to accept incoming mail is to specify the whole FQDN of the server in the address.For example the domain name is and I have a user set up called john. Sending mail to works.

But sending mail to (which is what I want) returns an error:
554 554 5.7.1 <>: Relay access denied (state 13).

For internal DNS, I have: - primary - alias - [URL] - alias server.example.comMX record [URL]

I see references here to problems in mail on 7.3 but not this specific problem.

Mac OS X (10.7.3)

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Mac OS X Lion Server :: Address Book Server-file Not Found

May 1, 2012


This is the error log im getting back from the addressbook server error log. I noticed that the push notification is not working for the addressbook server.

Info:Mac mini, Mac OS X (10.7.3)

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OS X Server :: Server's Static IP Address Used By Another Device?

Nov 4, 2006

The following error comes up on the server's screen when I turn on the stations:"IP is used by 00:0d:95:34:ee:60"Another device in my room or building is using the server's static IP address, this causes connectivity problems. I loose connection to the server. How do I find out what device is causing the problem and what do I do to resolve the issue? I am afraid it might be the CISCO 290XL switches used in the lab. I used ARD to check the Ethernet ID's and didn't come up with any workstation using that Ethernet ID or address.

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MacBook Pro :: Changing The Server Address Of Software Update?

Sep 16, 2010

I have a MBP 15, the computer service of my company has pointed the server address of Mac Software Update to an internal server. It makes me cannot run Software Update at any place but my office. How can I change the address back to the server at [URL]?

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MacBook :: Using Wireless Shenanigans - Changing Back To Dhcp?

Jul 28, 2009

I recently got a white macbook while i am deployed in iraq, and our wireless signal here kinda blows, but at least it works. The only issue i have, seems to be that when i am connected to an access point, my macbook will randomly loose signal, and i end up having to go into the airport preferences, change from DHCP to BOOTp, and it will refresh, then come back on. If it looses signal again, i just change it back to DHCP, and then it works again.

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MacBook Pro :: Ethernet Dynamic DHCP Not Working On Mid-2010 With 10.7.3

May 14, 2012

Ever since I upgraded to 10.7.3, my mid-2010 cannot connect to to internet via Ethernet any more (wireless works fine). 

Basically, the Network utility GUI shows that a correct IP address has been assigned via DHCP, but I get no internet. 

If I now check the output of 'ifconfig', I see 'en0' having a local IP address assigned, i.e. or similar. 

Seems like a software bug of some sort. Is it getting fixed in 10.7.4?

MacBook Pro, Mac OS X (10.7.3)

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OS X Server :: Going To Home Address - How To Stop It

Aug 12, 2007

Whenever I access my mac though my ip, local ip,, or the part of my domain linked to it, it usually will change the url to "Imac.local". How can I stop this?

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OS X :: Trying To Send Email - Server Not Recognize Address

Dec 25, 2009

When trying to send an email on my mother's .mac account the following error appears. (Her account is - The message can't be sent because the server doesn't recognize "'"-. I'm wondering if this is because there is an apostrophe after the first quotation mark. If so, how did it get there and how could it be removed?

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OS X Server :: Access Address Book Through LDAP?

Dec 23, 2010

I've a 10.6 Server. On it, lots of services are enabled such as Address Book Server. I've a copier enable to connect to an LDAP server to have access to mail, fax numbers and more of users/clients. I would like to connect this copier to a user's Address Book. But, user's address book is on the server, and it's a CardDAV address book. Is there a way to have access to this address book trough LDAP?

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Mac OS X Server :: Can't Ping My Lion At It's IPv6 Address

Mar 12, 2012

Why can't I ping my Lion Server via it's IPv6 address (using a tool on the provider's network) where IPv4 works all the time?

Info:Mac mini, Mac OS X (10.7.3)

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OS X V10.6 Snow Leopard :: How To Remove Server Address

Apr 10, 2012

I have a MacPro with Snow Leopard.  How do I remove "server addresses" where other computers are no longer in existence.  When I go to "Go/Connect to Server" I have some addresses which are no longer valid.  I can highlight them in the "Favorite Servers" list and hit "Remove" and they will disappear only to come back the next time I open the "Go/Connect to Server".   For example, one of the server addresses is "smb://xps630i-PC/ddrive" and was used to link my MacPro to my PC.  

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ICloud :: Migrate Address Book Server To It?

Apr 16, 2012

I was hoping to export an archive of Address Book which is running on my 10.6 server so that I could import it to iCloud's address book. 

How can I do this?  I can't see any functionality to import in iClouds's Address Book. 

Do I have to have all of these server contacts "On My Mac" before iCloud will play ball? 

Mac OS X (10.7.3), Server 10.6, iMac 10.7

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Mac OS X Lion Server :: Save Any Address In The Webmail Addressbook?

Feb 13, 2012

When I try to save any address in the webmail addressbook, it says "An Error Occured while saving." It's probably a permissions problem with the addressbook database RoundCube uses, but I'll be darn if I can find it...

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OS X :: How To Create A Network Dhcp

Nov 26, 2010

When we share internet connection through ad-hoc wireless network, each individual connecting to our network will be assigned with an unique IP Address and other required fields will be filled with proper data(Gateway and ..).

I used this feature to access my iPad through wifi, and had no intention of sharing an internet connection.
Now that I don't have an internet connection to share, my computer doesn't give any IP to my device, therefore my computer is unable to see my iPad on the network.

I also tried "Create network" feature of mac, but again, since IP addresses have been assigned by self, I'm not able to see my iPad on the network.

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OS X Server :: Local Host Loading SAME Page Regardless Of Typed Address?

Apr 2, 2009

Following an online video to learn the proper directory structure, I saw that the author was not running it through MAMP but the local Sites Directory.

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Mac OS X Lion Server :: Make Subdomains Default To External Address?

Apr 9, 2012

I have set up DNS with the following settings:


I thought I may be able to use a wild card (url..) but Server Admin does not allow me to do that, some documentation reccomends against it and I dont think that would work for [url].

Info:Mac mini, Mac OS X (10.6.8)

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Mac OS X Lion Server :: Delete (reset) Ical And Address-book On It?

Jun 13, 2012

I have change some DNS-Entries on my lion server. (new hosttname). Ich checked everthing with "sudo changeip -checkhostname" and it seems to work fine. Also the OD. Now it sorted out that i have some Problems with my ical & adressbook server. How can i delete them an make the straight new, so that i got a new entry for the old


At this moments a couple of time a day it complain that their is now connection for this Calender. Also the Adressbook refuse to save new entries. I both want to reset this ical & adressbook server part, but i can't find how to do it? 

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OS X :: Network Can't Locate IP/Router Using DHCP?

May 8, 2008

Having trouble on my mac while trying to connect to the internet using the built in Ethernet.

It says under network: Built in Ethernet is currently active. Built in ethernet has a self assigned IP address and may not be able to connect to the internet.

I hit the IPv6 and/or DHCP and it locates a IP just not a router number. Is this what is stopping it from connecting? Please help as I have an AP test I would like to study for....

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OS X :: Need To Renew DHCP Lease After Restart

Oct 31, 2009

When I make connection with my router I do not have internet, but I go to my network options and I click TCP/IP and then "renew DHCP-lease". The "Router" number change from to, and then my internet works. But if I have to restart my mac for some reason, it jumps right back to, and i have to click "renew DHCP-lease" again. I have this on my both Macs (MacBook unibody allu, and MacBook white and also on my iPhone).

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OS X V10.7 :: Airport DHCP Don't Update Lion DNS

May 12, 2012

I own a MacMini Server in my home network with Lion Server installed. I configured the DNS Service with a primary zone, providing nameserver (MacMini) etc. Server Admin tool create also a reverse zone (my IP Range is 10.0.0.I own also an Airport Extreme Base Station (4th Gen) acting as DSL Modem, DHCP and NAT and creating 2 Wireless networks (private and public network) and it's correctly set up for internet access... In AEBS settings the DNS Servers are (MacMini) and these settings everyting works fine but all the devices (other Macs, windows PCs, etc.) cannot ping each other... The only machine they can ping is obviusly the MacMini because in the DNS settings i punt manually a machine (A) record...

My question is: is possible to setup Lion Server to dinamically update DNS records using AEBS DHCP entries and reservations ? If possibile i don't want to add all the record manually and I don't want use the AEBS only as an access point...

Info:Mac mini, Mac OS X (10.7.3), Media Center + TM Server

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OS X :: Detecting Exchange Server Crashes Mail - ICal And Address Book

Aug 29, 2009

Having installed Snow Leopard today on my macbook, I was keen to set up Mail, iCal and address book with my exchange account. However, when I use any of these apps to detect my account settings, it crashes the respective programs. Entourage web services manages to connect my accounts but I don't find it particularly user friendly. Has anyone had a similar experience? If I can't resolve this, is there a way to manually configure accounts in the new apps?

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MacBook Pro :: Skype Wont Log On / Unable To Connect To Server?

Oct 23, 2010

I have downloaded the new version of Skype and it just won't let me log on. It says failed to log in: unable to connect to server. I try logging in my iPhone and Pc and they're fine. I have even downloaded the older versions of Skype and it's the same error.

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Windows On Mac :: XP SP3 Stop DHCP To Work Properly

Jul 6, 2010

We have some Education iMacs that I am having some problems with. XP can be fully up to date (except SP3) without any problems, they are connected to the domain, get an IP address, correctly sync time and process group policy settings at a computer level prior to the logon screen. All this is using the ethernet port (not wireless). As soon as SP3 is applied, they don't get a DHCP address until after login, therefore they don't sync time, process policies etc. If I uninstall SP3, back to working. I have reproduced this several times on different Macs (we have about 90 that are exhibiting this). Tried different version of bootcamp drivers.

If I reserve the address in DHCP, it doesn't make a difference. I seem to only have 2 options:
1. Manually enter an IP address in Windows (this is too time consuming)
2. Leave SP3 off (this means WSUS 3.0 SP2 won't work)
Is there a newer ethernet driver outside the bootcamp package?

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OS X V10.5 Leopard :: Set To Using Dhcp And To Configure Ipv6 Automatically?

Apr 6, 2012

I am trying to get an older Macbook Pro running 10.5.1 online and it is not working. I'm currently using 3 other Macs on the WiFi network all running Snow Leopard, so I know that network works.  I tried renewing the dhcp lease and I have it set to using dhcp and to configure ipv6 automatically, and there are 2 ip addresses under dns servers (I typed these in because they showed on my other MBP). I can't even upgrade the MBP because I have no ethernet cable and can't plug it in to update it. I can do to get it to work? 

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