This is a only version

Found at: raymii.org:70/Exchange_2007_2010_Autodiscovery_DNS_SRV_record_for_BIND.txt

This is a text-only version of the following page on https://raymii.org:
Title       : 	Exchange 2007 and 2010 Autodiscovery DNS SRV record for BIND
Author      : 	Remy van Elst
Date        : 	09-05-2013
URL         : 	https://raymii.org/s/tutorials/Exchange_2007_2010_Autodiscovery_DNS_SRV_record_for_BIND.html
Format      : 	Markdown/HTML
Note: This article is targeted at *NIX administrators who have to manage
Exchange installations, but are not Microsoft specialists. Therefore the BIND
setup does not have an explanation, but the Exchange part has.

I'm developing an open source monitoring app called Leaf Node Monitoring, for windows, linux & android. Go check it out!

Consider sponsoring me on Github. It means the world to me if you show your appreciation and you'll help pay the server costs.

You can also sponsor me by getting a Digital Ocean VPS. With this referral link you'll get $100 credit for 60 days.

### What is Exchange Autodiscovery
Exchange 2007/2010 Autodiscovery is the ability for Outlook to automatically
configure itself to an Exchange 2007/2010 server. The main benefit is for remote
users to use Outlook on the Internet as if it was connected on the LAN, this is
called Outlook Anywhere or Outlook RPC over HTTP. This is very easily
accomplished by having a specific DNS record available for the domain.
#### How does Exchange Autodiscovery work?
Outlook has a few ways to look for domain information when configuring itself
based on the users email address. Lets say I want to set up Outlook as
`john.doe@example.org`, but my site does not have the required Autodiscovery XML
files set up. I enter that email address in Outlook, now Outlook do the
following things to get its information:
  * Autodiscover posts to https://example.org/Autodiscover/Autodiscover.xml. This fails.
  * Autodiscover posts to https://autodiscover.example.org/Autodiscover/Autodiscover.xml. This fails.
  * Autodiscover performs the following redirect check: GET http://autodiscover.example.org/Autodiscover/Autodiscover.xml. This fails.
  * Autodiscover uses DNS SRV lookup for _autodiscover._ tcp.example.org, and then "mail.example.org" is returned.
  * Outlook asks permission from the user to continue with Autodiscover to post to https://mail.example.org/autodiscover/autodiscover.xml.
  * Autodiscover's POST request is successfully posted to https://mail.example.org/autodiscover/autodiscover.xml.
There are various reasons not to set up the Autodiscovery XML on the main
website or the Autodiscover.example.org. Mainly because it requires extra
certificates, IP addresses and maintenance. Maybe a company does not have
Windows servers to host their main website, or they don't want the hassle. In
those cases the DNS SRV record works very nice.
### BIND DNS Record
The following record line should be put in your zone config file
    ; Exchange autodiscovery
    _autodiscover._tcp                      IN      SRV 0 0 443 mail.example.org.
After a `rndc reload` you should be able to use the Autodiscovery service
without problems. It is tested with BIND 9.8.
### Sources
[White Paper: Exchange 2007 Autodiscover Service][2]  
[A new feature is available that enables Outlook 2007 to use DNS Service
Location (SRV) records to locate the Exchange Autodiscover service][3]
   [1]: https://www.digitalocean.com/?refcode=7435ae6b8212
   [2]: http://technet.microsoft.com/en-us/library/bb332063.aspx
   [3]: http://support.microsoft.com/kb/940881/en-us
All the text on this website is free as in freedom unless stated otherwise. 
This means you can use it in any way you want, you can copy it, change it 
the way you like and republish it, as long as you release the (modified) 
content under the same license to give others the same freedoms you've got 
and place my name and a link to this site with the article as source.
This site uses Google Analytics for statistics and Google Adwords for 
advertisements. You are tracked and Google knows everything about you. 
Use an adblocker like ublock-origin if you don't want it.
All the code on this website is licensed under the GNU GPL v3 license 
unless already licensed under a license which does not allows this form 
of licensing or if another license is stated on that page / in that software:
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see .
Just to be clear, the information on this website is for meant for educational 
purposes and you use it at your own risk. I do not take responsibility if you 
screw something up. Use common sense, do not 'rm -rf /' as root for example. 
If you have any questions then do not hesitate to contact me.
See https://raymii.org/s/static/About.html for details.