On 29-Mar-06, at 12:11 AM, Joshua, C.S. Chen wrote:
Looks like I have to enable SA in the 2nd server. It might be a spam hole if the spam sent to 2nd first, then forcily relayed to the primary.
If you are running postfix MTA on your 2nd server, you can map your email user list of main MTA server to your 2nd server (configure relay_recipient_maps parameter in main.cf) , the non-exist email address will be rejected immediately at SMTP session.
Thanks for all your opinions
Cheers
Joshua
Actually, you don't need to run a 2nd server for redundancy, if your main MTA is off line, legitimate sender MTA will queue it's email and try later, you would not lost email.
Vincent
