Scroll to the top of this page, and click on the "premature end of script headers" link. That may give you the information you need.

I am getting the error:

Server error!

The server encountered an internal error and was unable to complete your request.

Error message:
Premature end of script headers: greeting.pl

As updated in this blog, I updated the permissions for the folder and also tried everything but the error still stays.

could you help me

Hi!!

Thanks for all your support.

Here is the solution and some concepts that i could find during this troubleshooting process for perl in RedHat and the use of suexec policies:

at the <virtualhost adress:port> section we must put the following line
SuexecUserGroup username username

where "username" is the name of user that own the path where the html & cgi files are located: example /home/abelma1 below this directory are the following subdirectories: www/"virtualhostname"

The full path is "/home/abelma1/www/abelmar.net" this could be the value of your ScriptAlias directive inside the same section:

ScriptAlias /cgi-bin/ "/home/abelma1/www/abelmar.net/"
The complete example:

<VirtualHost adress:port$gt;
SuexecUserGroup abelma1 abelma1
ServerName abelmar.net
ServerAlias http://www.abelmar.net
ServerAdmin webmaster@abelmar.net

Alias /abelmar.net/ "/home/abelma1/www/abelmar.net/"
ScriptAlias /cgi-bin/ "/home/abelma1/www/abelmar.net/"

DocumentRoot /home/abelma1/www/abelmar.net

<Directory /home/abelma1/www/abelmar.net>
AllowOverride All
Options Includes Indexes FollowSymLinks ExecCGI MultiViews
Order allow,deny
Allow from all
</Directory>
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteOptions inherit
</IfModule>

.
</VirtualHost>

At cgi files level and directory level too, we need to assign them the owner "abelma1″ as user and we need to assign the same user name "abelma1″ as a group name, where "abelma1″ is the user that manage apache for certain path.

What cause the problem on a virtual host schema:
if suexecUserGroup user and group are different to the owner of the path indicated at the DocumentRoot directive inside the <virtualhost…> section at the configuration file of apache, the suexec policies give us an error 500 at server and the execution of cgi is aborted.

http://linux.derkeiler.com/Mailing-Lists/RedHat/2004-04/0128.html

which says:

In any case, I ended up changing the GID of users from 100 to 500 in /etc/groups and changed the user's default group in /etc/passwd from 100 to 500 and reset the ownerships on their files. Everything seems to be working now.

Its odd because the scripts in /var/www/cgi-bin can be owned by anyone and run so that pretty much does away with the security precautions…

However, I haven't dealt with this and don't know what that might affect, so I'd contact your web host.

I think that the problem is that the server runs under suexec policies.

I get no more the header error message, i am getting an other one, to be honest is the very first time that i am working under suexec policies, but is mandatory with this ISP.

the new error that i am investigating is this:
[2010-08-31 16:27:13]: uid: (500/abelma1) gid: (48/48) cmd: test01.cgi
[2010-08-31 16:27:13]: cannot run as forbidden gid (48/test01.cgi)

I set the SuexecUserGroup to abelma1 apache at section.
the directory that contains all the scripts, has abelma1 as the owner and apache as the group and all the files and directories under it has the same ownership.

Thank in advance for your help

ADDED: Your ISP may have some .cgi scripts uploaded; you might take a look at those to see how they specify things.

I have my apps at a Red Hat Linux, it is not my preferred.
The ISP where is the service that i am using has a very complex control panel that use Perl with a very sophisticated configuration that force me to run under a vitualhost section.
I can run, for example, php and python with no problems, but the other perl applications that work over FreeBSD unix and solaris with no problems, didn´t run there.
I tried adding the line that you recommend, but nothing happened, also I checked the permissions and all is ok, the files are in ascii format
Some ideas?
, thanks in advance.