[sclug] Disabling outgoing mail on postfix

[Simon Huggins]

On Tue, Nov 02, 2004 at 11:35:46AM +0000, Tim Sutton wrote:
> Yes I have it currently set to only allow outbound mail from
> localhost...the problem arose last time when someone found a loophole
> in nuke that allowed them to spam from  my server. So I want to
> prevent localhost from sending mail out from my server (delivery to
> local users is ok) so that I can monitor bandwidth useage and see if
> my server is being used for undesired purposes.

You'll want to disable local submission via e.g. /usr/lib/sendmail too
as there's no reason they can't call that from nuke.

In fact why don't you run nuke in php safe_mode with an undefined
safe_mode_exec_dir ?

This would help a bit at least.

I still think you probably need to configure your MTA to only deliver to
local users as well but I only really grok exim not postfix.

Simon.

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