Does your other A Record "board.imcu.com" resolve correctly? Michael Walker Senior Network Engineer Citrus Valley Health Partners 140 W. College Street, Covina, CA 91723 Phone/Fax/Pager: (888) 299-6882 mwal...@mail.cvhp.org<mailto:mwal...@mail.cvhp.org>
From: itli...@imcu.com [mailto:itli...@imcu.com] Sent: Monday, October 29, 2012 9:34 AM To: NT System Admin Issues Subject: RE: DNS? Just mail.imcu.com no ip address. Ping not host I am getting very frustrated because it is staring me in the face.... From: Walker, Michael [mailto:mwal...@mail.cvhp.org] Posted At: Monday, October 29, 2012 12:30 PM Posted To: itli...@imcu.com<mailto:itli...@imcu.com> Conversation: DNS? Subject: RE: DNS? Question: When you do an NSLOOKUP of mail.imcu.com, what does it resolve to? Michael Walker Senior Network Engineer Citrus Valley Health Partners 140 W. College Street, Covina, CA 91723 Phone/Fax/Pager: (888) 299-6882 mwal...@mail.cvhp.org<mailto:mwal...@mail.cvhp.org> From: itli...@imcu.com<mailto:itli...@imcu.com> [mailto:itli...@imcu.com] Sent: Monday, October 29, 2012 8:55 AM To: NT System Admin Issues Subject: RE: DNS? Public ip works. DNS, ping, https, activesync the whole thing. I want to access it internally using a name instead of an IP address. Currently with I can not https://mail.imcu.com/exchange with or without the 'imcu.com' zone internally. If I use a hosts file entry the above works. If I use the ip (10.0.50.14) the https link works. Not sure I need to go out my firewall just to come back in to get to my exchange box? From: Richard McClary [mailto:richard.mccl...@aspca.org] Posted At: Monday, October 29, 2012 11:41 AM Posted To: itli...@imcu.com<mailto:itli...@imcu.com> Conversation: DNS? Subject: RE: DNS? Let's see... You have a private LAN, and you are hoping the public can reach the system at that same (private, internal) IP? Why not register an external IP for that system, then do a mapped IP address ("MIP") through your firewall? From: itli...@imcu.com<mailto:itli...@imcu.com> [mailto:itli...@imcu.com] Sent: Monday, October 29, 2012 9:59 AM To: NT System Admin Issues Subject: RE: DNS? You are accessing it from external though. External is working fine. I am wanting an internal zone since my domain is imcu.local and my mail is imcu.com... I hope to God you can use the internal ip address from the wild. That would send me home in a bucket. From: Steve Ens [mailto:stevey...@gmail.com] Posted At: Monday, October 29, 2012 10:53 AM Posted To: itli...@imcu.com<mailto:itli...@imcu.com> Conversation: DNS? Subject: Re: DNS? For me it's the other way around... On Mon, Oct 29, 2012 at 9:46 AM, itli...@imcu.com<mailto:itli...@imcu.com> <itli...@imcu.com<mailto:itli...@imcu.com>> wrote: Ok https://10.0.50.4/exchange works but https://mail.imcu.com/exchange fails??? From: Kennedy, Jim [mailto:kennedy...@elyriaschools.org<mailto:kennedy...@elyriaschools.org>] Posted At: Monday, October 29, 2012 10:12 AM Posted To: itli...@imcu.com<mailto:itli...@imcu.com> Conversation: DNS? Subject: RE: DNS? That looks correct. Be sure to flush dns on the machine doing the lookup. To be sure you should first do an nslookup on the domain's MX and make sure you get mail.imcu.com<http://mail.imcu.com> nslookup Set type=MX Imcu.com That should return mail.imcu.com<http://mail.imcu.com> Then check the A record for mail.imcu.com<http://mail.imcu.com> and you should be good to go. From: itli...@imcu.com<mailto:itli...@imcu.com> [mailto:itli...@imcu.com] Sent: Monday, October 29, 2012 10:09 AM To: NT System Admin Issues Subject: RE: DNS? I'll recycle the dnscache and post my internal DNS records here to make sure I am doing it correctly. New Primary Zone IMCU.COM<http://IMCU.COM> imcu.com<http://imcu.com> A 12.145.145.177.176 imcu.com<http://imcu.com> MX mail.imcu.com<http://mail.imcu.com> mail.imcu.com<http://mail.imcu.com> A 10.0.50.4 (((((internal address)))))) www.imcu.com<http://www.imcu.com> A 12.145.177.176<tel:12.145.177.176> (((((external address for managed website)))))) board.imcu.com<http://board.imcu.com> A 10.0.10.21 (((((internal address)))))) Should that be all that I need? I have vpn.imcu.com<http://vpn.imcu.com>, ftp.imcu.com<ftp://ftp.imcu.com> but they are programmatically only accessible through the firewall so outside in only. After the recycle of dnscache I should be able to do an nslookup for mail.imcu.com<http://mail.imcu.com> and get the ip 10.0.50.4 just like in my hosts file(Which I have commented out until after this experiment works or fails) Thanks From: Kennedy, Jim [mailto:kennedy...@elyriaschools.org]<mailto:[mailto:kennedy...@elyriaschools.org]> Posted At: Monday, October 29, 2012 8:18 AM Posted To: itli...@imcu.com<mailto:itli...@imcu.com> Conversation: DNS? Subject: RE: DNS? Did you also add an MX record for that domain pointing at mail.imcu.com<http://mail.imcu.com>? Most MTA's will fall back to the A record for the domain, so you could also put up an A record for imcu.com<http://imcu.com>. But I wouldn't count on that. Exchange didn't until 2007 or so. From: itli...@imcu.com<mailto:itli...@imcu.com> [mailto:itli...@imcu.com] Sent: Sunday, October 28, 2012 1:50 PM To: NT System Admin Issues Subject: DNS? I have added a new Forward lookup zone for IMCU.COM<http://IMCU.COM> on my local active Directory. I have added an 'a' record for 10.0.50.4 for mail.imcu.com<http://mail.imcu.com> in that zone. I do not resolve the mail to the ip. If I add that record in my hosts file I can browse it easily. What is wrong in my DNS set up? 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