I have a new problem and I need some help.
My problem is that I use Zimbra with my external SMTP ISP, with a lot of accounts.
This work for one account, for example I use my account email@example.com and I can send emails for external emails and Internals mails.
This function ok because I configured OUTGOING SMTP AUTHENTICATION with the data of my account. My ISP check email + user + pass.
Bt my problem is when I configure another account, for example firstname.lastname@example.org.
This user try to send an email for an external account and receive an email with this error:
SENDER ADDRES REJECTED: NOT OWNED BY USER: user.
My question is How I can to setup more than one account in Authentication, It is possible??
Many thanks to all.