We're thinking of moving the majority of our customers' mail to linux, and
a few issues have come up:
1) How secure is sendmail 8.6.9 ? What are the main things we need to do to
secure our public facing linux mail server?
2) Worst case scenario is that our public facing linux box gets hacked, and
taken down completely - what's the best way of backing this up to ensure
minimum downtime - we'd ideally like to have a 'backup' linux box that
mirrors itself from the main one, and will allow us to switch to it in the
case of the main box going down.. is this possible? What are the implications?
3) If our main linux box got hacked, is a switched hub enough to protect us
from a potential hacker being able to packet sniff our entire network?
Any input much appreciated
JL
