[BlueOnyx:06834] Stopping backscatter from majordomo

[bluequartz at ozin.com]

Sorry to ask again but I didn't get a reply last time.

My Blueonyx server is producing backscatter when mail is sent to majordomo at domain

Majordomo was removed from this server but the server seems to be accepting mail for majordomo and then emailing out an error report to the sender.
Instead it should be refusing the mail at the SMTP level like other unknown addresses.

I suspect I have to remove something from sendmail but what?

Thanks in advance for your help

This is an example of the backscatter:



   ----- The following addresses had permanent fatal errors -----
"|/usr/local/majordomo/wrapper majordomo -C /usr/local/majordomo/sites/site4/majordomo.cf"
    (reason: Service unavailable)
    (expanded from: <majordomo at example.com>)

   ----- Transcript of session follows -----
smrsh: "wrapper" not available for sendmail programs (stat failed)
554 5.0.0 Service unavailable