Aaron Wolfe wrote:
On Tue, Dec 2, 2008 at 2:51 PM, Marc Perkel <[EMAIL PROTECTED]> wrote:
Tell me if you think this is a good idea.
I'm thinking about offering a free MX backup service that people without
backup servers can use. I'm thinking about doing this as a way of promoting
my spam filtering business because users will see a significant reduction in
spam and might want to upgrade. The way it would work is that someone with
just one MX record can add 2 more MX records.
Anyhow - it's just something I'm thinking about. Want to get some feedback
as to if I should do it. Anyone want to tell me why I'm crazy?
Without accurate user lists, backup mx will be source of massive
backscatter as messages are accepted for invalid users and then
rejected by the primary. Getting user lists synced from the primary
sites will be difficult given all the different mail servers and
different ways they store their user info. You could try to use
callouts to the primary to establish whether a user account is valid
before accepting the message, but then you arent much of a backup when
the primary goes down. It isn't crazy but it is not trivial to do
backup mx well.
-Aaron
Thanks Aaron, that is a good point. But I'm running Exim and I think I
can code it so that it will not generate backscatter. I'll have to
design that in up front.
