Re: Local delivery problems on FreeBSD

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Author: Greg A. Woods
Date:  
To: Philip Crewdson
CC: Martin Cooper, exim-users
Subject: Re: Local delivery problems on FreeBSD
[ On Thu, November 28, 1996 at 15:48:14 (+0000), Philip Crewdson wrote: ]
> Subject: Re: Local delivery problems on FreeBSD
>
> Thanks for this. It looks nice and neat.


FYI, using a unique group for the mailer, and making mailboxes 660 and
the mail directory 775, and making the mailer setgid is the solution
AT&T SyV has been using since R2 or before. When combined with a
wrapper to open the SMTP socket, it makes for a very much more secure
mail system (so long as no user can be a member of the mail group). The
only damage a cracker can do via the mailer is then limited to mail.

-- 
                            Greg A. Woods


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