catchall email not accepting other email

[CLovell]

Hi everyone,

I'm experiencing an odd problem with email:

I have setup a [email protected] with plesk for our server, with 'mail to nonexistant user' forwarded to the same catchall address. However, emails are still being bounced when mailed to other addresses that this should catch:

Hi. This is the qmail-send program at [HOST].
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<catchall@[DOMAIN.TLD]>:
This message is looping: it already has my Delivered-To line. (#5.4.6)

--- Below this line is a copy of the message.

Would anyone please know how to get the email to be accepted?

Thanks!