On 21/02/2010 22:03, Jonathan Tripathy wrote:
On 21/02/2010 22:00, Jonathan Tripathy wrote:
On 21/02/2010 21:55, Wietse Venema wrote:
Jonathan Tripathy:
My main issue is that my backup mx doesn't have sasl enabled (It's
relay
only..)
Why would your users submit mail to the backup MX host?
Wietse
You're correct, they woudn't. I just don't like the thought that
someone could connect to the backup mx and pretend to be from my
domain. However, as I've just found out, since the backup mx is
"relaying" to primary, the primary mx bounces an email back, so I
guess the email won't be delivered anyway, however the queue gets a
MAILER-DAEMON messagage...
Actually, the MAILER-DAEMON message doesn't get queued at all! It just
discards it when it can't find the user (If the from address was
notarealaddr...@mydomain.com). So I guess it all good...
Oops I'm confusing myself here. The above is true if the spoofed from
address was from my domain, but the user didn't exsist. If the user is
real, then that user gets the MAILER-DAEMON message..
