mail forwarding loop for

Hello together,

we have a problem with our new mailserver (mail.example.com), which we did set up last week.

Every email which is sent to a redirected email-adress is answered by the following error from
Mail Delivery System <MAILER-DAEMON@mail.example.com>

We cannot find any mistake there.


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This is the mail system at host mail.example.com.

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...

mail forwarding loop for