Is there any way to get the emails sent from my client domains to show up using their client domains in the address?
For example, I have a client domain yyy.com while my main domain that I am hosting from is xxx.com. I have created a user under the yyy.com domain called me so his actual username ends up being web1_me. Now when I login using web1_me and his password, send an email, and then receive it on the other end, the address shows up as firstname.lastname@example.org
rather than email@example.com
How do I go about fixing this? If you need any further information maybe my Postfix conf file, let me know.