Lighttpd

please add an example config that illustrates the problem.

Example config as follows:

server.username = "lighttpd" 
server.groupname = "lighttpd" 

server.document-root = "/www/public" 
server.port          = 80

server.errorlog      = "/www/logs/error.log" 
accesslog.filename   = "/www/logs/access.log" 

index-file.names = ( "index.html" , "index.htm" , "index.php" )

include "mime_types.conf" 

server.modules = (
                  "mod_accesslog" 
                 )

# this works

$HTTP["host"] == "othersite.com" {

   # settings here
}

# this doesn't work - 400 (Bad Request) Error

$HTTP["host"] == "othersite" {

   # settings here
}

We can not reproduce it here.
can you add:

debug.log-request-handling = "enable"

to your config and paste the error log part for the request?

I've just realised what the problem is - when I did it on my own server, I used an underscore in the domain. I remembered seeing that there is an issue with underscores in domain names in Lighty because of the HTTP Recommendations (that is in another ticket somewhere) whilst I was searching for this issue.

This can be closed - sorry for taking up your time.