Hi,
I configured Relay MTA for external delivery: 222.255.121.226 : 25 to send mail from local user to yahoo or gmail. And this is Mail Delivery System and recive back when sending:

The mail system

: host 222.255.121.226[222.255.121.226] said: 550
khuongdq@trustbank.com.vn must check for new mail first (in reply to MAIL
FROM command)


Please tell me why and how to correct!

QK.