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From "Boyle Owen" <>
Subject RE: [users@httpd] Problems with virtual hosting
Date Mon, 03 Mar 2003 15:35:55 GMT
>-----Original Message-----
>From: Krisztian Gyoerffy []
>Hi Apache users,
>first of all I would like to say, I made all the steps I 
>could do to figure out the problem by myself. So I tried 
>to find an answer by searching the Web, tried to find an 
>answer by reading the manual, tried to find an answer by 
>reading the FAQ, and beside of that I am playing around 
>with this issue since 2 weeks.

First of all, let me congratulate you on perhaps the most complete and
well laid-out problem description to appear on this mailing list in many
months! It is a pleasure to find all relevant information in logical
order in the first posting and this should be an example to all those -
"it ain't working!" posters.

Now, how about your problem... :-) (See notes below)

Owen Boyle
Disclaimer: Any disclaimer attached to this message may be ignored. 

>So let me explain what is the problem exactly:
>I have a Linux box with SuSE 7.1 and apache 1.3.19 running 
>on it, installed from a SuSE rpm package.The web server is 
>listening on the standard HTTP port (80). Beside of this 
>web server I have an extra standalone webmail service 
>listening on port 3000.
>The machine is a multihomed one, doing maquerading, 
>connected with one IP to the Internet and with an other 
>one to my internal network.
>I decided to set up an alias for the webmail service, that 
>it is reachable via this, and I don't need to define 
>everytime the port after the address (instead 
> having So I set up 
>this alias in the DNS, which also points to the same 
>external IP like
>After this I configured the virtual hosting section in 
>httpd.conf (and I suppose, the problem might be here), 
>which looks now like this:
>NameVirtualHost *
><VirtualHost *>
>           Servername
>           DocumentRoot 
>      "/usr/local/httpd/test_home/docs"
>           ErrorLog 
>          /usr/local/httpd/test_home/ErrorLog/error_log
>	  CustomLog 
>         /usr/local/httpd/test_home/CustomLog/access_log 
><VirtualHost *>
>           Servername    
>           ProxyPass               / http://a.b.c.d:3000/
>           ProxyPassReverse        / http://a.b.c.d:3000/

- So and both point to your public IP
address - Double-check this?
- On which interface is the webmail service listening on port 3000? - I
assume on the internet IP address?

(BTW, watch the directive spelling: I always keep correct case
(ServerName) even though it doesn't really matter.)

>The phenomen is that eighter my common web page of 
> will be displayed even if I try to connect to 
> or apache connects me to the webmail 
>service, but I get various errors on the page (e.g. couple 
>of pics cannot be displayed, cannot found, etc) and 
>nothing is working there. If I connect to the port of the 
>webmail service directly like it works 
>I tried to replace the * with the external IP address, and 
>I also tried to define a.b.c.d as both the internal and 
>external address of the machine with no success.

- "*" is fine, but if you want, replace it with external IP.
- a.b.c.d should equal external IP.

>My question is, how is it possible to configure apache so, 
>that if somebody connects to, he will reach 
>my common web page, and if he connects to 
>(so to the alias for the webmail service), he will be 
>forwarded to the webmail service?

There's no obvious error in the config, but I wonder about the
UseCanonicalName setting... You might try "UseCanonicalName off" just
after the NameVirtualHost directive.

Also, check the HTML on the webmail pages. Make sure all links to IMGs
etc are relative (e.g. <img src="/images/pic.gif"> and not absolute
(like, <img src="http://abcd:3000/images/pic.gif">).

>Thanks for your help in advance
>PS: if you need more details about my config, please ask 
>The official User-To-User support forum of the Apache HTTP 
>Server Project.
>See <URL:> for more info.
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