ICloud missing DNS records for SMTP servers
Cannot send e-mail from iCloud account using Mail.app (outgoing iCloud server is offline), incoming
iCloud server is p05-imap.mail.me.com and is reachable.
betelgeuse:~ mirek$ host p05-imap.mail.me.com
p05-imap.mail.me.com has address 17.172.100.69
The SMTP DNS does not exist (checked on external hosts with same results).
betelgeuse:~ mirek$ host p05-smtp.mail.me.com
Host p05-smtp.mail.me.com not found: 3(NXDOMAIN)
betelgeuse:~ mirek$
iPad and iPhone also complain about not being able to contact p05-smtp.mail.me.com
Apple please fix it!
I have the same problem. I spoke with AppleCare and they were supposed to be fixing it (and emailing me straight away) but so far they have not... May speak with them again if necessary...
Similar Messages
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#554 5.4.4 SMTPSEND.DNS.MxLoopback; DNS records for this domain are configured in a loop ##
Hi,
This is my first post here.
My exchange server of late is facing a peculiar problem. I get the error message that I have posted below when sending mails to any outside domain. However when I restart the server the mails can be resend to the address without any issue. After a certain
time again the issue pops up upon which I am forced to restart the server again. I am running 2007 Exchange on Windows 2003.
Generating server: name.mydomain.com
[email protected]
#554 5.4.4 SMTPSEND.DNS.MxLoopback; DNS records for this domain are configured in a loop ##
[email protected]
#554 5.4.4 SMTPSEND.DNS.MxLoopback; DNS records for this domain are configured in a loop ##
Original message headers:
Received: from name.mydomain.com ([1xx.xxx.xxx.xx5]) by MHDMAILS.mouwasat.com
([1xx.xxx.xxx.xx5]) with mapi; Wed, 19 Oct 2011 08:56:29 +0300
From: <[email protected]>
To: <[email protected]>
CC: "Al Alami,Tareq" <[email protected]>
Date: Wed, 19 Oct 2011 08:56:27 +0300
Subject: RE:
Thread-Topic:
Thread-Index: AcyAQ5tu8z9CvBfdT5+1pcGQkk6x0AIuwczAAAGZjeABQyW5sAADeeJQAAETNDA=
Message-ID: <[email protected]>
References: <[email protected]com>
<[email protected]com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: yes
X-MS-TNEF-Correlator:
acceptlanguage: en-US
Content-Type: multipart/related;
boundary="_004_EEC8FA6B3B286A4E90D709FECDF51AA06C0588CA11namedomain_";
type="multipart/alternative"
MIME-Version: 1.0On Sun, 23 Oct 2011 15:05:15 +0000, Jobin Jacob wrote:
>
>
>Even af
>
>ter removing my domain from the send connector I continue to receive the error. I would like to say I do have a firewall, Cyberoam. However, it was the same configuration till now in the firewall. I did try Mx lookup and found the following.
>
>Could there be any other solution to this issue ?
Sure, but it's necessary to ask a lot of questions since none of us
know how your organization is set up.
I see you also have "Use the External DNS Lookup settings on the
transport server" box checked. How have you configured the "External
DNS Lookups" on the HT server's property page? Is there any good
reason why you aren't just using your internal DNS servers? If the
internal DNS servers are configured to resolve (or forward) queries
for "external" domains then there's no reason to use that checkbox. In
most cases checking that box is a mistake.
http://technet.microsoft.com/en-us/library/aa997166(EXCHG.80).aspx
The behavior you describe (it works for a while and then fails;
restarting the server returns it to a working state) sure sounds like
some sort of DNS problem.
Rich Matheisen
MCSE+I, Exchange MVP
--- Rich Matheisen MCSE+I, Exchange MVP -
Error in PA40: missing secondary record for infotype 0001
Hi Experts,
while changing the job code of employee i am getting below error in the PA40 transaction for IT0001 .
Error : missing secondary record for infotype 0001 Key
could you please tell me why this message is coming.
Advance thanks,
Regards
RamHi,
Please check out whether any user exits are maintained.
Check ZXPADU01/ZXPADU02 includes.
Please also check out whether there are dynamic actions configured for IT0000 and IT0001 via V_T588Z.
Regards,
Dilek
Edited by: Dilek Ersoz Adak on Dec 16, 2009 3:19 PM -
Missing SOA record for AD integrated zone
We are in the process of updating our Domain Controllers. We have 3 (now 2) Domain Controllers running server 2008 and 3 new Domain Controllers running Server 2012 R2. In DNS, we have 3 AD integrated zones. 1 of the zones is missing the SOA record on all
3 new DCs.
Before the record went missing, I first noticed an issue when attempting to demote one of the Server 2008 DCs. I had received the following warning:
"This Active Directory domain controller appears to be the last DNS server for the following Active Directory-integrated zones:
zonename If you demote this domain controller, you may be unable to resolve any DNS names in these zones."
I found a TechNet article with someone in the same boat, and the solution was basically to ignore the warning.
Well I checked out the zone in question, and noticed that the SOA record on the 3 new DCs had an old version/serial number (25 on the new DCs, 126 on the old DCs). This is a zone that rarely gets touched. I did an increment serial number on one
of the old DCs and they were then all showing version 127 for their SOA record, so the replication was working. The other odd thing about the SOA record is that on the OLD DCs, the record pointed to themselves, like they should. But on the new
DCs, the SOA record pointed to other DCs, which they shouldn't be doing. Well, whatever, I went ahead and completed demoting the 2008 DC I was working on.
After demotion completed, I attempted to fix the messed up SOA record on the new DCs. First I tried changing the replication scope from all DNS servers on DCs in the domain to all DCs (Win 2000 compatible). This didn't do anything for the SOA
record. For my next attempt, I took one of the old DCs and removed the problem zone from AD, making it a standard primary zone. Then I removed the AD-integrated version of the zone from another DC and waited for the zone removal to replicate.
So now the only copy of the zone is a standard primary on 1 DC. Then I switched the zone to AD integrated and waited for replication. Sure enough the zone appeared on all DCs. However, now on the 3 new DCs, the zone in question is now missing
the SOA record entirely. On the old DCs, the SOA record looks fine. When I open the zone properties on one of the new DCs and select the SOA tab, it just says "The data is not available."
So there we go. 3 DCs missing their SOA record for an AD integrated zone. Any suggestions?Well I found the source of the problem. The zone giving me trouble has a CNAME record that's the same name as the zone itself. For example, for the zone testZone.local there is a CNAME record called testZone.local that points to www.testZone.local.
That way if someone types testZone.local into their browser, they end up at www.testZone.local. After some research, I discovered that CNAME records cannot share the same name as any other record. In my example, the CNAME record has the same
name as the SOA and NS records in the zone. Although many DNS servers allow this practice, it is not a valid DNS configuration.
While this setup worked fine in our Server 2008 environment, it definitely causes problems in Server 2012 R2. Somewhere between those 2 versions, Microsoft changed their DNS implementation. So to avoid any issues with our zone, we just need to
configure it correctly! -
When do I have to update my DNS records for my URLs, such as mail and autodiscover?
We currently have EX2010, with autodiscover.domain, owa.domain, and outlook.domain records in DNS. The outlook.domain is used for the CAS array and would not be modified during this.
We are going to install new EX2013 servers soon. When we do that, we plan to set all the URLs to be the same as EX2010 (like above).
From what I can tell, I do not have to change the DNS records until we actually start to migrate mailboxes. Would that be correct? I would rather do some additional testing, and get our load balancers configured correctly, before pointing autodiscover
and owa at EX2013.
Most of the documentation I have seen says change the DNS records at the end of your installation, but that would be if I was ready to migrate mailboxes I would think.
Thanks for any help or assistance on this. I have read all of the articles on the Exchange Blog site, but nothing really says make this change immediately.Hi DarlonJeel,
Based on your description, I know you want to upgrade Exchange 2010 to Exchange 2013.
After you've completed the installation of Exchange 2013, you could update the MX record and the Autodiscover record to the Exchange 2013 CAS Server.
Don’t worry about that the users whose mailboxes are located in Exchange 2010 server. When a user uses OWA or OutlookAnywhere, Exchange 2013 CAS server will redirect to the Exchange 2010
CAS server automatically.
Hope it helps,
Best regards,
Eric -
Missing Delta Records for 2LIS_02_ITM & SCL
Hi Experts,
this is how my problem goes.
i have done my set up table filled on 12th Dec 2010 and from that time onwards the delta were running everyday and filling the DSO and Cube.
Accidently by some others PC in prod all my delta loads and the setup table load is being deleted except yesterday in PSA for these 2 extractors and now because of some change i have to do a full load to DSO.
But as the PSA is emply and have only yesterday's request i have, deleted that one as well and done a Init Delta to it and i found out that only the Set up table is comming now and all the deltas in between are missing.
i have tried a full LOAd to PSA and the result is same.
How can i get those missing delta records from 12th Dec last year till today with out doing another set up table fill or Do i have to have fill the set up table again till today and thats the only way? i will set the delta again after that.
Do we have to have all the user locked for the setup table fill (for Queued Delta type) ? Lot of people says yes you have to and others says no you don't require. i got one white paper and it clearly says no user locking is required. please find the link below. what is the correct way?
[http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/d019f683-eac1-2b10-40a6-cfe48796a4ca?quicklink=index&overridelayout=true]Hi,
As per my knowledge you want load particular period of data try repair request may issue solve.
Regards
Sivaraju -
Creating a DNS Record for a Host with Two or More IP???
Can we create DNS A Record for a Host with Two or More IP ... ( we like to use my website "mysite.com" pointing to two Ips )
Please help...Sure, no worries.
In a production environment DNS will query always the first record it will stores in cache, you need to find a dynamic or NLB way to achieve the automatic fail over else when you will have an outage with the first IP, then you need to ask your clients to
clear the cache and register to DNS again, this i will not suggest in a production environment, lots of manual efforts and doesnt sound like a solution in a production environment, i would suggest you to explore windows NLB, it's easy to set and use the OS
license.
Thanks
Inderjit -
How to create a DNS record for a domain itself (without a hostname)
Hi,
Normally, you can create a DNS record that points to the zone itself, e.g.:
@ 10800 IN A 196.197.200.201
How do you accomplish that on a Mac OSX Lion Server? The DNS requires you to enter a hostname and it does not accept "@" as the hostname as it normally appears in the zone file.
(manually modifying the host file does not work - I tried that ;-) )
Any help is appreciated
Thanks
Bjoern DirchsenCreate either a blank record with a ., or a FQDN such as 'domain.com.' (note the trailing dot). Either of these should map to the domain name.
-
Missing delta records for the Z extractor
Hi,
I have created a Z extractor for the table BUT050 in CRM. I have created a function module and have included the delta logic on CRDAT which is the created date, CRTIM - created time, CHDAT - change date, CHTIM - Change time. I have initialed the delta and started doing the delta loads. I found that there are few missing records in the extractor when compared to the table. I'm attaching my code below.Can anyone please look into it and tell me what the issue is.
Text removed by moderator
Thanks
FUNCTION Z_BI_CC_BUT050.
*"*"Local Interface:
*" IMPORTING
*" VALUE(I_REQUNR) TYPE SRSC_S_IF_SIMPLE-REQUNR
*" VALUE(I_DSOURCE) TYPE SRSC_S_IF_SIMPLE-DSOURCE OPTIONAL
*" VALUE(I_MAXSIZE) TYPE SRSC_S_IF_SIMPLE-MAXSIZE OPTIONAL
*" VALUE(I_INITFLAG) TYPE SRSC_S_IF_SIMPLE-INITFLAG OPTIONAL
*" VALUE(I_READ_ONLY) TYPE SRSC_S_IF_SIMPLE-READONLY OPTIONAL
*" VALUE(I_REMOTE_CALL) TYPE SBIWA_FLAG DEFAULT SBIWA_C_FLAG_OFF
*" TABLES
*" I_T_SELECT TYPE SRSC_S_IF_SIMPLE-T_SELECT OPTIONAL
*" I_T_FIELDS TYPE SRSC_S_IF_SIMPLE-T_FIELDS OPTIONAL
*" E_T_DATA STRUCTURE ZBI_BUT050 OPTIONAL
*" EXCEPTIONS
*" NO_MORE_DATA
*" ERROR_PASSED_TO_MESS_HANDLER
* Auxiliary Selection criteria structure
DATA: l_s_select TYPE srsc_s_select.
* Maximum number of lines for DB table
STATICS: s_s_if TYPE srsc_s_if_simple,
* counter
s_counter_datapakid LIKE sy-tabix,
* cursor
s_cursor TYPE cursor.
* Select ranges
RANGES: l_r_RELNR FOR ZBI_BUT050-RELNR,
l_r_PARTNER1 FOR ZBI_BUT050-PARTNER1,
l_r_PARTNER2 FOR ZBI_BUT050-PARTNER2,
l_r_DATE_TO FOR ZBI_BUT050-DATE_TO,
l_r_ZZTMSTMP FOR ZBI_BUT050-ZZTMSTMP.
DATA : startdate LIKE sy-datum,
starttime LIKE sy-uzeit,
enddate LIKE sy-datum,
endtime LIKE sy-uzeit,
tstamp LIKE tzonref-tstamps,
timezone type TZONREF-TZONE.
RANGES: l_r_CRDAT FOR ZBI_BUT050-CRDAT,
l_r_CRTIM FOR ZBI_BUT050-CRTIM.
* Initialization mode (first call by SAPI) or data transfer mode
* (following calls) ?
IF i_initflag = sbiwa_c_flag_on.
* Initialization: check input parameters
* buffer input parameters
* prepare data selection
* Check DataSource validity
CASE i_dsource.
WHEN 'ZCC_MA_BUT050'.
WHEN OTHERS.
IF 1 = 2. MESSAGE e009(r3). ENDIF.
* this is a typical log call. Please write every error message like this
log_write 'E' "message type
'R3' "message class
'009' "message number
i_dsource "message variable 1
' '. "message variable 2
RAISE error_passed_to_mess_handler.
ENDCASE.
APPEND LINES OF i_t_select TO s_s_if-t_select.
* Fill parameter buffer for data extraction calls
s_s_if-requnr = i_requnr.
s_s_if-dsource = i_dsource.
s_s_if-maxsize = i_maxsize.
* Fill field list table for an optimized select statement
* (in case that there is no 1:1 relation between InfoSource fields
* and database table fields this may be far from beeing trivial)
APPEND LINES OF i_t_fields TO s_s_if-t_fields.
ELSE. "Initialization mode or data extraction ?
* Data transfer: First Call OPEN CURSOR + FETCH
* Following Calls FETCH only
* First data package -> OPEN CURSOR
IF s_counter_datapakid = 0.
* Fill range tables BW will only pass down simple selection criteria
* of the type SIGN = 'I' and OPTION = 'EQ' or OPTION = 'BT'.
LOOP AT s_s_if-t_select INTO l_s_select WHERE fieldnm = 'RELNR'.
MOVE-CORRESPONDING l_s_select TO l_r_RELNR.
APPEND l_r_RELNR.
ENDLOOP.
LOOP AT s_s_if-t_select INTO l_s_select WHERE fieldnm = 'PARTNER1'.
MOVE-CORRESPONDING l_s_select TO l_r_PARTNER1.
APPEND l_r_PARTNER1.
ENDLOOP.
LOOP AT s_s_if-t_select INTO l_s_select WHERE fieldnm = 'PARTNER2'.
MOVE-CORRESPONDING l_s_select TO l_r_PARTNER2.
APPEND l_r_PARTNER2.
ENDLOOP.
LOOP AT s_s_if-t_select INTO l_s_select WHERE fieldnm = 'DATE_TO'.
MOVE-CORRESPONDING l_s_select TO l_r_DATE_TO.
APPEND l_r_DATE_TO.
ENDLOOP.
* Timestamp is delivered as a selection criterion.
* Split the timestamp into date and time
LOOP AT s_s_if-t_select INTO l_s_select WHERE fieldnm = 'ZZTMSTMP'.
tstamp = l_s_select-low.
timezone = 'EST'.
CONVERT TIME STAMP tstamp TIME ZONE timezone
INTO DATE startdate TIME starttime.
tstamp = l_s_select-high.
CONVERT TIME STAMP tstamp TIME ZONE timezone
INTO DATE enddate TIME endtime.
l_r_CRDAT-low = startdate.
l_r_CRDAT-sign = l_s_select-sign.
l_r_CRDAT-option = l_s_select-option.
l_r_CRDAT-high = enddate.
APPEND l_r_CRDAT.
l_r_CRTIM-low = starttime.
l_r_CRTIM-sign = l_s_select-sign.
l_r_CRTIM-option = l_s_select-option.
l_r_CRTIM-high = endtime.
APPEND l_r_CRTIM.
ENDLOOP.
* Determine number of database records to be read per FETCH statement
* from input parameter I_MAXSIZE. If there is a one to one relation
* between DataSource table lines and database entries, this is trivial.
* In other cases, it may be impossible and some estimated value has to
* be determined.
OPEN CURSOR WITH HOLD s_cursor FOR
* Use the l_r_erdat and l_r_erfzeit for both creation and change selections
* This way we can pick up both the creations and changes in a given time period.
SELECT * FROM BUT050
WHERE RELNR IN l_r_RELNR
AND PARTNER1 IN l_r_PARTNER1
AND PARTNER2 IN l_r_PARTNER2
AND DATE_TO IN l_r_DATE_TO
AND ( CRDAT >= startdate AND ( CRTIM >= starttime OR ( CRDAT <= enddate AND CRTIM <= endtime ) ) )
OR ( CHDAT >= startdate AND ( CHTIM >= starttime OR ( CHDAT <= enddate AND CHTIM <= endtime ) ) ).
ENDIF.
"First data package ?
* Fetch records into interface table.
* named E_T_'Name of extract structure'.
FETCH NEXT CURSOR s_cursor
APPENDING CORRESPONDING FIELDS
OF TABLE e_t_data
PACKAGE SIZE s_s_if-maxsize.
IF sy-subrc <> 0.
CLOSE CURSOR s_cursor.
RAISE no_more_data.
ENDIF.
s_counter_datapakid = s_counter_datapakid + 1.
ENDIF. "Initialization mode or data extraction ?
ENDFUNCTION.
Message was edited by: Matthew BillinghamHi,
As per my knowledge you want load particular period of data try repair request may issue solve.
Regards
Sivaraju -
I have an internal DNS running lets say example.com with an IP 192.168.0.1
When I put in ping www.example.com it goes to 192.168.0.1
I want to change it so that when I ping www.example.com it goes to a different external IP address, as the www server does not reside on my main server.
I tried in Server Admin, adding www in the zone, but it does not seem to change it.
Any ideas?If you haven't already created a 'www' record in your example.com domain then you won't be able to resolve 'www.example.com'
The only exception to that is if you've added a wildcard record that says all unknown hostnames map to the same address, but you can't do that via Server Admin.
Even if you have added a wildcard, adding a specific 'www' record would override it.
Therefore I can think of two scenarios at play.
One is that you're not resolving the query via this server, and some other server is responding with the 192.168.0.1 address.
The other is that there's some problem with the zone data that's preventing it from loading. You should look at the logs to see if that's the case - they should indicate any problems. -
I have an Exchange 2010 server with SP3. It's otherwise running fine (as fine as Exchange is). We are in the midst of a migration to "hosted" Exchange (Office365).
I'm suddenly getting this error sending MAPI to Yahoo. MXTools says Yahoo's MX records are fine.
I ran th get-transport comandlet and get this message:
ClearCategories : True
ConuertDisclainerrIrapperToEnl : False
DßNConuersionMode : UseExchangeflSNs
ExternalDelayDsnEnabled : True
ExternalflsnDefaultLanguage :
ExternalDsnLanguageDetectionEnabled : True
ExternalDsnMaxMessageAttachSize : 10 MB (10.485.760 bytes)
ExternalDsnfleportingAuthority :
ExternalDsnSendHtnl : True
ExternalPostnasterAddress :
CenerateCopyOfDSNFor : <5.4.8. 5.4.6. 5.4.4. 5.2.4. 5.2.0. 5_1_4)
HygieneSuite : Standard
InternalflelayflsnEnabled : True
InternalDsnDefaultLanguage :
InternalDsnLanguageDetectionEnabled : True
InternalDsnMaxMessageAttachSize : 10 MU (10,405,760 bytes)
InternalDsnReportingAuthority :
InternalDsnSendHtnl : True
InternalSMTPSeruers : <)
JournalingfleportHdrTo : <>
LegacyJournalingMigrationEnabled : False
MaxDunpsterSizePerDatabase : 20 MU (20.971.520 bytes)
MaxDunpsterTine : 7.00:00:00
MaxfleceiveSize : 40 MU (41.943,040 bytes)
MaxflecipientEnuelopeLinit : 1000
MaxSendSize : 40 MU (41.943.040 bytes)
MigrationEnabled : False
OpenDonainfloutingEnabled : False
Pfc223lEncodingEnabled : False
ShadowHeartbeatfletryCount : 12
ShadowHeartbeatTineoutlnterual : 00:15:00
ShadowMessageAutoDiscardlnterual : 2.00:00:00
ShadowRedundancyEnabled : True
SuperuisionTags : <Reject. Allow)
TLSReceiueDonainSecureList : <)
TLSSendDonainSecureList : <)
UerifySecureSubnitEnabled : False
UoicenailJournalingEnabled : True
HeaderPronotionModeSetting : NoCreate
Xexch5øEnabled : True
I am the Exchange Admin by default, so I appreciate any advice anyone gives.
Thanks in advance.
[email protected]Hi,
I recommend that you create a dedicated send connector for Yahoo and smarthost the mails to MX IP address of Yahoo. And then check if the issue persist.
Thanks.
Niko Cheng
TechNet Community Support -
ORA-23320 a missing DDL record for REPCATLOG record
To generate replication support for TRIGGERS (Multi master Replication Scenario).
When I tried to generate the replication trigger to update TIMESTAMP field in a table to resolve conflict, an error occurs (ora-23320).
I can register the trigger object but when i try to generate support through
dbms_repcat.generate_replication_support , it gives me the above mentioned error.
at the same time, i am able to generate support for the table objects .
Kindly give me a suggession.Thank you for the suggestion..
Here the object got registered at all master sites, as trigger itself got created at the other locations. I used following command to register the object..
DBMS_REPCAT.CREATE_MASTER_OBJECT(..)
But still generation of replication support raise the error mentioned.
Please notify if any sort of other errors.. -
DNS record ownership for DHCP clients
my configuration:
dhcp/dns/dc installed on same system - Windows 2008 R2 SP1 in domain environment.
all zones configured to secure updates only with aging and scavenging enabled
dhcp servers are member of DNSupdateproxy group.
dhcp are configured with standard domain user account (this user was made a member of dnsupdateproxy as well, DOES THAT MATTER?)
dhcp scopes are configured with default DNS setup (force DNS update by DHCP)
now...
all DNS records for endpoint devices on dhcp lease (windows7, mac os X, ubuntu) are owned by SYSTEM
in security tab for some DNS records i can see service account with write permission to record ( i believe this is desired state)
in other records service account has no permission but timestamps are still updated by computer account (hostname$ has write permission). these records have pencil icon on computers in dhcp lease table.
Problem with this (hostname$ has write permissions) is when user connect to network via VPN (obtains dhcp lease) it get's two records registered in DNS -> 1 record for ip distributed by dhcp server and 2nd record for his home private network.
Have anyone seen this before?
i've tried deleting DNS records / releasing ip on endpoint device (example win7). It would not register to DNS by DHCP. However if i do ipconfig /registerdns it will do it, but dhcp service account won't have permission no this record.Apparently it appears that DHCP may not be configured with credentials, DHCP DNS settings are not configured to force DHCP to register ALL requests, nor has the DHCP server itself have been added to the DnsUpdateProxy group. These are all prerequisites
for DHCP to own all records, otherwise you will see default behavior, which is:
By default, a Windows 2000 and newer statically configured machines will
register their A record (hostname) and PTR (reverse entry) into DNS.
If set to DHCP, a Windows 2000 or newer machine will request DHCP to allow
the machine itself to register its own A record, but DHCP will register its PTR
(reverse entry) record.
The entity that registers the record in DNS, owns the record.
In summary:
Configure DHCP Credentials. The credentials only need to be a plain-Jane, non-administrator, user account. Give it a really strong password.
Set DHCP properties, DNS tab, to update everything, whether the clients can or cannot.
Add the DHCP server(s) to the Active Directory, Built-In DnsUpdateProxy security group.
Make sure ALL other non-DHCP servers are NOT in the DnsUpdateProxy group. For example, some believe that the DNS servers or other DCs not running DHCP should be in it. They must be removed or it won't work.
On Windows 2008 R2 or newer, DISABLE Name Protection.
If DHCP is co-located on a Windows 2008 R2 or Windows 2012 DC, you can and must secure the DnsUpdateProxy group by running the following:
dnscmd /config /OpenAclOnProxyUpdates 0
Configure Scavenging one one DNS server. Set the NOREFRESH and REFRESH values combined to be equal or greater than the DHCP Lease length. What it scavenges will replicate to others anyway.
DHCP Service Configuration, Dynamic DNS Updates, Scavenging, Static Entries, Timestamps, DnsUpdateProxy Group, DHCP Credentials, prevent duplicate DNS records, DHCP has a "pen" icon, and more...
Published by Ace Fekay, MCT, MVP DS on Aug 20, 2009 at 10:36 AM 3758 2
http://msmvps.com/blogs/acefekay/archive/2009/08/20/dhcp-dynamic-dns-updates-scavenging-static-entries-amp-timestamps-and-the-dnsproxyupdate-group.aspx
Good summary:
How Dynamic DNS behaves with multiple DHCP servers on the same Domain?
http://social.technet.microsoft.com/Forums/en-US/winserverNIS/thread/e9d13327-ee75-4622-a3c7-459554319a27
DNS Record Ownership and the DnsUpdateProxy Group
http://technet.microsoft.com/en-us/library/dd334715(v=ws.10).aspx
DNS Record Ownership and the DnsUpdateProxy Group
"... to protect against unsecured records or to permit members of the DnsUpdateProxy group to register records in zones that allow only secured dynamic updates, you must create a dedicated (NON-ADMIN) user account and
configure DHCP servers to perform DNS dynamic updates with the credentials of this account (user name, password, and domain). Multiple DHCP servers can use the credentials of one dedicated user account."
http://technet.microsoft.com/en-us/library/dd334715(WS.10).aspx
DNS record ownership and the DnsUpdateProxy group
http://social.technet.microsoft.com/Forums/en-US/winserverNIS/thread/b17c798c-c4b2-4624-926c-4d2676e68279/
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. -
Shared Printers - Using a DNS record instead of server name for failover
I have a Server 2012 Print Server. I plan on creating a second one for failover purposes. I will be installing the shared printers on client PCs using Group policy preferences. Instead of using
\\servername\printer as the path, can I create a DNS record for the server name and use
\\dnsname\printer? That way, if the first server dies, I just edit the dns record to point to the second server instead of renaming the second server and changing the IP of the second server.Hi,
Based on your description, we can try creating a DNS alias for our printer server and use the alias instead of the host name in the UNC path. When this server goes down, we
can make the alias pointing to another printer server.
Regarding how to create an alias for a DNS host name, the following article can be referred to for more information.
Add an Alias (CNAME) Resource Record to a Zone
http://technet.microsoft.com/en-us/library/cc772053.aspx
Hope it helps.
Best regards,
Frank Shen -
Server DNS record automatically deleted
We built a new file server 10 days ago. When we set it up it would have gotten a dhcp address which then we converted it into having a static ip address.
8 days later the DNS Record for the server automatically got deleted. This was not setup as a static record in DNS as it would have had a time stamp on it. The server was online the whole time and was not rebooted. What would cause the DHCP record of the
file server to automatically get deleted when this has never happened when setting up new servers or productions servers as none of our staff deleted the record.Hi,
The reord is first registered by DHCP server, so the owner would be the DHCP server. And only DHCP server could change the record. Once the lease in DHCP is expired, the record will be deleted.
Just reigster the record manually, if it is deleted again, then it should be a problem. But I don't think it will happen.
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