I created a new account with my name and administrator rights. Then I deleted the "admin@mydomain" account and added this address (admin@mydomain) as an alias to my account.
I can send mail from Zimbra and from the internet (GMail) to the admin@ alias. But if the Zimbra system itself tries to send an email to admin@ alias, the delivery fails without giving any reason. The notification of the failed delivery itself is delivered successfully to the account the admin@ alias belongs to.
This is the postfix notification mail (***** is from me to hide my domain name):
This is the Postfix program at host zimbra.*****.com. The logfile doesn't tell my anything about the faild delivery, too (but about the successful delivered "undeliverable mail" information).
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to <postmaster>
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The Postfix program
Any idea what happened and what I can do to creect this?
Thanks a lot