主题: Help!!!...How to Route Local Delivery to outside & through MX back

因為本人有2台 iRedMail Server with same Domain, different Host Record

Help...How to set postfix send local email route to internet & Back

a@abc.com send email to b @abc.com

email will delivery like
a@abc.com -> email server -> internet -> DNS MX RECORD -> email server -> b@abc.com

工能:
1 只能Send, 不能Receive, 作EDM 用途 (Server 1)
2 收發日常Email (Server 2)

Setting:
DNS:
1. edm.abc.com -> IP1 (Server1 IP)
2. mail.abc.com -> IP2 (Server2 IP)
abc.com MX mail.abc.com

這樣外來send入的Email 就不會投入EDM Mail Server (Server1)

但現在由EDM Mail Server Send Out, 不能投入 mail.abc.com (Server2)
Recipient address rejected: User unknown in virtual mailbox table;
因為Server 1 沒有, Server 2 的 Email Account