I understand your concerns. I have a second machine at home and I've
been setting up to do spam and virus filtering for other servers. The
home computer would have a duplicate of my spam and virus filtering and
if I take the main server down the backup server would still be able to
clean mail and forward it on to my customers who I do mail cleaning for.
Which brings me to my next issue. The backup server should accept email
- spam filter it - and then store it for the main server - for the
domains I host - and manually route to the target server for the domains
that I screen spam and viruses for.
So - it would seem to me that I need a router that looks at the list and
routes to DEFER or something like that until my main server comes up for
the domains I host on the main server.
Somehow - I hink - I need some router that says - "Send it to the lowest
MX and if you can't - hold on to it".
Tim Jackson wrote:
>Hi Marc, on Sun, 09 May 2004 18:34:12 -0700 you wrote:
>
>
>
>However:
>
>a) Consider whether you *really* need a secondary MX. Many situations
>these days don't really require one, and adding one can create more
>problems than it solves.
>
>b) If you do need one, make sure that you duplicate all your access rules
>(anti-spam/virus measures, and lists of valid users) across to the
>secondary in one way or another, so that basically both machines give
>identical responses. Otherwise your secondary will become a "leaky" back
>door for spam, mis-addressed mail and other unwanted stuff.
>
>
>Tim
>
>--
>
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>
>
>
>
