Backup MX still not work.
Domain mydomain.com i added on 2 servers main-mx & backup-mx server.
And pointing to 2 servers MX:
@ MX main-mx.serverdomain.com 1
@ MX backup-mx.serverdomain.com 5 -> This is marked as backup mx
My purpose is:
- When main-mx is downing, email will not lost
- And email sending and receiving will continue through backup-mx
On backup-mx server, i checked on "Mark as Backup MX"
1. Does i need manually add mailbox account on both servers? (Or i do auto-sync when Backup MX work)
2. After that i shutdown main-mx server, and use my @gmail.com mailbox send to @mydomain.com, then i boot up main-mx server, it is not recived any mail from backup-mx server. I checked backup-mx server log, it said rejected. and @gmail.com failed email message, it said could not delivery.
I tried many days and many times, could not get it work.
Error messages 1:
The error that the other server returned was:
554 5.7.1 <email@example.com>: Relay access denied
Error message 2:
<firstname.lastname@example.org>: user unknown
Final-Recipient: rfc822; email@example.com
Diagnostic-Code: x-unix; user unknown
Zhang, could you please step-by-step write a tutorial to guide how to setup Backup MX, Relay domain, and how to use disclaimer.
That features very useful, but no clearly documents.
Thanks Zhang !