general/7156: apache server doesn't seem to like underscores in hostnames

[dan trottier <dt...@philipinc.com>]

>Number:         7156
>Category:       general
>Synopsis:       apache server doesn't seem to like underscores in hostnames
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    apache
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Tue Jan 30 08:40:05 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     dtrottier@philipinc.com
>Release:        1.3.14,0
>Organization:
apache
>Environment:
AIX 4.3.2

Precompiled by IBM software distribution site
>Description:
The internal hostname of our development/test server is rs_corp_2.  I installed apache on that system but if I specify the URL http://rs_corp_2 I get a 400 bad request page and the error_log states "client sent a malformed host header".

I've found several references to this issue but no solutions that have worked for me. I've configured a CNAME record without an underscore and that works fine.

What is the recommended solution?

Regards,

Dan
>How-To-Repeat:
See above. 
>Fix:
I'm under the impression that underscores should not be used in hostnames. I think there should be setting in the httpd.conf file that turns on or off strick hostname checking.
>Release-Note:
>Audit-Trail:
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