RE: Internal mail server
At 18:36 05/01/2003 -0600, Scott A. Moberly wrote: -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of [EMAIL PROTECTED] Sent: Sunday, January 05, 2003 3:55 PM To: [EMAIL PROTECTED] Subject: Internal mail server Here is my problem: I have a lab with students that is going to be taught how to use an email client(Outlook). I want to set them up on an internal server that will not be visible from the outside world(Internet). I have the mail server setup using qmail and freebsd4.7. I also want to use a fake domain name, i.e. labcomps.net,.org,.com whatever, so that I will be able to send email within the class and no email will go outside or from the outside to the inside. Ironically, i just finished doing exactly that, if I understand you correctly. Not a problem at all. Just give named authority over the 'fake' domain and give it some forwarders (in example named.conf file supplied with FreeBSD). Then point all the m$ clients at the internal dns. Added bonus... it'll cache the results and depending on how dns was previously set up you could see some reduction in external lookups. You may be better using a domain name in the form labs.local or something similar - especially if the machines have external access: you don't really want your test emails escaping to the real domain if you pick a .com and, say, the DHCP server resets your users' DNS server settings. (owning irrelevant.com, the number of emails I get that are plainly tests or people not wishing to fill in real addresses in web forms is astonishing ... or maybe not.) You don't need to stick to the .com/.net/.org model of tlds if you are setting up a system that nobody else will access. Your imagination is the limit! Regards Rob -- APH Computers Ltd. Tel: 0161-442 2603 Fax: 0161-443 1162 To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message
RE: Internal mail server
[EMAIL PROTECTED] Wrote: Thanks to all who have given me advice on this question. I hope most of you will be up at around 2:30am Alaska time as this is when I will probably run into my errors and questions. 8^) I have my O'reilly DNS and Bind book and Gregs FreeBSD Handbook plus I can use sample configs from my own dns server and any other doc I can find. If any one else has more suggestions I would appreciate any and all. I have to try and have this setup by Monday morning and will use every reference I can find. Thanks again, signing up to this list has been a godsend to me. I've done this many times for clients' internal email. It's a way to keep internal mail private when combined with a firewall. But you don't need a firewall to have it work. Use a made up TLD (Top Level Domain). It won't interfere with anything in DNS that way. For example, 'hostname.inside' where the TLD is '.inside' or '.intra' for a local intranet. Just make sure that the DNS server has no slaves. You might set it up on the same box as the mail server for simplicity. Include some forwarders in named.conf and it will serve perfectly well for all DNS queries to outside too, with the bonus that you'll get some saving in outside traffic due to its' cache. Set the clients DNS to that server. Create user accounts as [EMAIL PROTECTED] on the server. That's about it. You might want to make the point to your class that using their .inside address as a reply-to will only work when sent to other .inside email addresses. If somebody outside replies, obviously it will bounce. Understanding this is useful for people getting a grasp of how it all works at a conceptual level. Some people want only keystrokes and rules. They get terrified when told more (you see blank glassy-eyed stares), but this isn't difficult stuff. To call the TLD you make up fake isn't quite right. In a network logic sense, it's just as real as any other. The only difference is that only clients pointed at the DNS server that contains it will see it. Out on the larger Internet there is a structure in place that eventually points you to appropriate DNS servers for particular domains. In this case we're simply using our own little structure and private domain as a supplement. This point is political too. Dennis Mathiasen [EMAIL PROTECTED] Deerfield Hosting - High Performance Hosting http://DeerfieldHosting.com?ref=sig To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message
Internal mail server
Here is my problem: I have a lab with students that is going to be taught how to use an email client(Outlook). I want to set them up on an internal server that will not be visible from the outside world(Internet). I have the mail server setup using qmail and freebsd4.7. I also want to use a fake domain name, i.e. labcomps.net,.org,.com whatever, so that I will be able to send email within the class and no email will go outside or from the outside to the inside. Questions: 1. Can I setup a dns server to do this with the fake domain name and not be visible to the outside? 2. Has somebody done this type of setup before and have any online documentation that I could follow? 3. Can somebody tell me if this is even a possibility? Thank You, Jon To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message
RE: Internal mail server
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of [EMAIL PROTECTED] Sent: Sunday, January 05, 2003 3:55 PM To: [EMAIL PROTECTED] Subject: Internal mail server Here is my problem: I have a lab with students that is going to be taught how to use an email client(Outlook). I want to set them up on an internal server that will not be visible from the outside world(Internet). I have the mail server setup using qmail and freebsd4.7. I also want to use a fake domain name, i.e. labcomps.net,.org,.com whatever, so that I will be able to send email within the class and no email will go outside or from the outside to the inside. Ironically, i just finished doing exactly that, if I understand you correctly. Questions: 1. Can I setup a dns server to do this with the fake domain name and not be visible to the outside? Yup. I set up a DNS server on my lan to respond to my fake domain. Sorry, I used a friend's DNS configuration as a guide, so I cannot give too many examples. I did check the freebsd handbook for many small items for dns though. Just make sure your hostname matches the dns stuff to make life easier. 2. Has somebody done this type of setup before and have any online documentation that I could follow? Qmail: http://logicsquad.net/freebsd/qmail-how-to.html 3. Can somebody tell me if this is even a possibility? Thank You, Jon To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message To Unsubscribe: send mail to [EMAIL PROTECTED] with unsubscribe freebsd-questions in the body of the message
