Thanks very much Victor & Jeroen. As I'm a newbie/beginner, guess I'll stick to "sender access map" & see if there are many spoofed emails.
I have a lot to learn from this list. Thanks U On Sat, Jan 29, 2011 at 8:35 PM, Victor Duchovni < victor.ducho...@morganstanley.com> wrote: > On Sat, Jan 29, 2011 at 12:36:35PM +0100, Jeroen Geilman wrote: > > > Just put those domains in a sender access map. > > This is easily spoofed, and the OP has stated a desire to not allow > spoofed email. Hence some sort of authentication (SPF, DKIM, TLS client > certs, bilaterally agreed list of client IPs, ...) may be necessary. > > -- > Viktor. >
