[cobalt-users] alias: :include:/home/sites/siteX/list won't forward

["WebMost" <rdavis@xxxxxxxxxxx>]

Ahoy

On my RaQ2

When I try to send an alias to a mailing list thus:

     alias:    :include:/home/sites/siteX/mail_lists/file.list

The mail returns with:

    550 :include:/home/sites/site3/mail_lists/test.list... Cannot
   open /home/sites/site3/mail_lists/test.list: Group writable directory
   554 <testmail@xxxxxxxxxx>... aliasing/forwarding loop broken

At line 380 of my sendmail.cf, I find this comment:

    # are group-writable :include: and .forward files (un)trustworthy?
    #O UnsafeGroupWrites

(I want a program belonging to siteX to write and erase this list as needed)
Before I go ahead and mess with this checking, Why is this rule established?
Is there some very good security reason not apparent to me?
Is there a better way to do this rather than by disabling this rule?

Aloha
Davis