I have a mail account firstname.lastname@example.org.
When the user sends a mail to another person, the receiver sees the mail coming from another email account email@example.com.
I have asked the user of the prod mailbox to log out & log in again, but the problem persists.
I have also restarted Zimbra on the server, but to no avail.
Can anyone help me to find the solution?
Thanks in advance.