I was just wondering how I might add a group to a group in Linux.

Thanks in advance.

And in case anyone has an answer: why would you want to do that? (just curious)

[edit]
Did you mean adding a group to the /etc/group file? Just wondering
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I am running a website with forum that allows emailing through a web interface. I am using sendmail and as usual I am using the clientmqueue directory. This default permissions to this directory are drwxrwx--- smmsp smmsp. If I leave this default I get an error in my mail log about apache not having full permissions to the clientmqueue directory.

Rather than changing the permissions on the direcotry to drwxrwxrwx and allowing the world to access the directory, I would rather just add the "apache" group to the "smmsp" group. This would allow me to keep the default drwxrwx--- and give apache the permissions it needs.

Thanks in advance.

I'm no expert, so I am a bit curious myself, but I thought you could only add users to groups. AFAIK, users are listed in /etc/passwd (such as "mysql", "adm", "root", maybe "apache" too?).

I don't think you can add a group to a group. In any case, you're probably best off just calling the normal mail sending facility (mail or sendmail) from rhw PHP or Perl code on your Web site and not mucking directly with the mail queue.