We are planning to go from a split DNS architecture to a single domain model. Our first step is to create a new subdomain that will eventually hold only internal (10.x.x.x) addresses. To allow for readdressing, we are going to run both domains from the same file internally, but I have some questions as to how to best accomplish that. Current setup: accenture.com zone accessible from the internet only (on AMRNS1501.accenture.com) accenture.com zone accessible internally only with both private and public addresses. Interim setup (on current internal NS): accenture.com and internal.accenture.com accessible internally only with both private and public addresses, using the same db file. Final setup (on new internal NS): accenture.com with public only addresses (same file as external zone) internal.accenture.com with private only addresses. For the db file that will serve both accenture.com and internal.accenture.com, I know that I can use non-fully qualified domain names and they will be appended with the zone name (or origin, if there is one). This will work perfectly for A and CNAME records, but how do we handle MX & NS records? I've pasted a sample of our internal zone file with the NS & MX records below (I've put in a few of the A records. There are over 8000 lines, so I didn't put it all in here...). I'd like to know if I can get away with using the same file, or if I need to use separate files for the zones with modified NS & MX records and use include for the A & CNAME records. (our NOC makes our DNS entries, so I want to make sure it's as dummy proof as I can get it...) This project has fried my brain, so please be kind and use small words =) Also, I know our external zone is a mess. That's next on the list... Thanks, Laura $TTL 14400 $ORIGIN accenture.com. @ SOA amrns1001.accenture.com. hostmaster.accenture.com. ( 2001090401 ;serial 3600 ;refresh 900 ;retry 3600000 ;expire 14400 ) ;minim ; ; accenture.com. NS amrns1001.accenture.com. accenture.com. NS apans1001.accenture.com. accenture.com. NS emens1001.accenture.com. accenture.com. NS dalns1012.accenture.com. accenture.com. NS dalns1013.accenture.com. ; 3270gateway NS isscg5001.awo.com. 3270gateway NS isscg5002.awo.com. alltel NS dns70p10.alltel.accenture.com. alltel NS dns.alltel.accenture.com. alltel3270gateway NS alltelcnt0.accenture.com. bpm NS amrns1001.accenture.com. bpm NS amrns1002.accenture.com. bpm NS amrns1003.accenture.com. brandspace NS amrns1001.accenture.com. brandspace NS emens1001.accenture.com. brandspace NS apans1001.accenture.com. chc.us NS chcns1106.accenture.com. chc.us NS chcns1105.accenture.com. cscoe NS nsmmfs01.cscoe.accenture.com. cst 86400 NS amrns1001.accenture.com. cst 86400 NS amrns1002.accenture.com. cst 86400 NS amrns1003.accenture.com. cst 86400 NS molten.cst.accenture.com. de NS emens1001.accenture.com. de NS emens1002.accenture.com. de NS emens1003.accenture.com. ds NS nbrns1001.ds.accenture.com. ebs NS knock.ser.bbnplanet.net. ebs NS nic.near.net. emtoolskmds NS amrns1010.accenture.com. energy NS emens1001.accenture.com. energy NS emens1002.accenture.com. japan NS apans1001.accenture.com. japan NS apans1002.accenture.com. japan NS apans1003.accenture.com. mas NS spdch1001.mas.accenture.com. msoparis NS parws1012.msoparis.accenture.com. msoparis NS parws1013.msoparis.accenture.com. nl NS amsns1001.nl.accenture.com. nl NS sopns1001.nl.accenture.com. onesource NS thailand.accenture.com. onesourcedev NS falcon.onesourcedev.accenture.com. onesourcetest NS france.onesourcetest.accenture.com. pl NS emens1001.accenture.com. pl NS emens1002.accenture.com. pl NS emens1003.accenture.com. services NS amrns1010.accenture.com. solutionworks NS swns01.solutionworks.accenture.com. solutionworks NS swns02.solutionworks.accenture.com. solutionworks NS knock.ser.bbnplanet.net. solutionworks NS sol.sura.net. ssc NS nic.near.net. stpete NS stpns1001.stpete.accenture.com. stpete NS stpns1002.stpete.accenture.com. tax NS amrns1001.accenture.com. tax NS emens1001.accenture.com. tax NS apans1001.accenture.com. tp NS nbrns1501.accenture.com. tp NS nbrns1502.accenture.com. us 86400 NS amrns1001.accenture.com. us 86400 NS amrns1002.accenture.com. us 86400 NS amrns1003.accenture.com. wz NS nbrns1501.accenture.com. wz NS nbrns1502.accenture.com. @ MX 10 MTAHM1500 @ MX 10 MTAHM1600 @ MX 10 MTAHM1400 @ MX 10 MTAHM1100 @ MX 10 MTAHM1200 @ MX 10 MTAHM1300 amrmr1001 MX 10 mpcmr1001 amrmr1001 MX 10 mpcmr1002 amrmr1001 MX 20 nbrmr1001 amrmr1001 MX 20 nbrmr1002 amrmr1002 MX 10 nbrmr1001 amrmr1002 MX 10 nbrmr1002 amrmr1002 MX 20 mpcmr1001 amrmr1002 MX 20 mpcmr1002 amrmr1003 MX 10 mtahm1100 amrmr1003 MX 10 mtahm1200 amrmr1003 MX 10 mtahm1300 amrmr1003 MX 20 mtahm1400 amrmr1003 MX 20 mtahm1500 amrmr1003 MX 20 mtahm1600 amrmr1004 MX 10 mtahm1400 amrmr1004 MX 10 mtahm1500 amrmr1004 MX 10 mtahm1600 amrmr1004 MX 20 mtahm1100 amrmr1004 MX 20 mtahm1200 amrmr1004 MX 20 mtahm1300 apamrhosts MX 10 issmr5001.awo.com. bellsouth MX 10 belmx1001.accenture.com. bellsouth MX 20 belmx1002 bpmx MX 10 bpcmr1001 cstar MX 10 nbrmr1003 dc MX 10 dcmx101 eagle MX 0 junior ememr1001 MX 10 locmr1001 ememr1001 MX 20 frcmr1001 ememr1002 MX 10 frcmr1001 ememr1002 MX 20 locmr1001 procurement-accenture MX 10 nbres1004 realise MX 10 crcxm1000 realize MX 10 crcxm1000 ti MX 10 nbrmr1003 tis MX 0 dogbert uhcmx1001 MX 10 uhcmr1001 uhcmx1001 MX 10 uhcmr1002 amrns1001 A 10.4.198.10 amrns1002 A 10.10.20.39 amrns1003 A 10.17.108.37 dns70p10.alltel A 170.252.24.55 dns.alltel A 170.252.24.56 alltelcnt0 A 204.86.66.6 emens1001 A 10.135.64.82 emens1002 A 10.136.252.2 emens1003 A 10.114.253.39 nsmmfs01.cscoe A 149.122.62.13 molten.cst A 198.95.195.98 mtahm1400 A 10.10.100.245 mailhost CNAME MTAHM1400 mtahm1500 A 10.10.100.246 mailhost CNAME MTAHM1500 mtahm1600 A 10.10.100.247 mailhost CNAME MTAHM1600 (Embedded image moved to file: pic15573.gif) Laura L. Herndon Accenture - CIO Technology Services - Network Services - Data Network Optimization Phone: 214-672-4048 Cellular: 214-893-5383 Numeric Pager: 888-352-0578 Text Pager: 8883520578@airmessage.net email: laura.l.herndon@accenture.com This message is for the designated recipient only and may contain privileged or confidential information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited. -- Binary/unsupported file stripped by Listar -- -- Type: image/gif -- File: pic15573.gif