On Sat, Feb 28, 2009 at 2:29 PM, mabshoff <mabsh...@googlemail.com> wrote: > > > > On Feb 28, 11:27 am, William Stein <wst...@gmail.com> wrote: >> On Sat, Feb 28, 2009 at 3:09 AM, Simon King <k...@mathematik.uni-jena.de> >> wrote: >> >> > Hi William, >> >> > On 28 Feb., 04:49, William Stein <wst...@gmail.com> wrote: >> >> You should use Sage in such cases. Type >> >> sage: email? >> >> for more details. That uses Twisted behind the scenes. >> >> > Very cool -- was my first reaction. But wouldn't this allow to turn a >> > public notebook into a spam-bot? >> >> Yes. > > Well, you have os.system and I have yet to see a system without the > mail command. William's version is just more efficient :)
s...@sagenb:~$ mail The program 'mail' can be found in the following packages: * mailx * mailutils Ask your administrator to install one of them -bash: mail: command not found > >> > Is there a security feature to prevent this? >> >> Not at sagenb.org right now, but it is easy to add prevention of this >> by adding a firewall to the virtual server to not allow any outgoing >> ports to be opened. > > Email gets out in many cases where you don't expect it. You have to do > a really tight set of firewall rules which will likely make the box > not that usable any more anyway :) I would turn off opening of any ports at all by non-root users. Does that make the box unusable? Note that sendmail, etc., isn't installed systemwide. William --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to sage-devel-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
