[Mailman-Users] newbie question -- sendmail errors

[Dodson, Matthew]

I am runnibg redhat 7.2 with the latest build of mailman. I receive the
following error from sendmail when I try to confirm a subscription. Sorry if
this has been answered before.

   ----- The following addresses had permanent fatal errors ----- 
|/home/mailman/mail/wrapper mailcmd ops 
    (reason: service unavailable) 
    (expanded from: <ops-request at support.coremetrics.com>) 

   ----- Transcript of session follows ----- 
smrsh: wrapper.mailcmd.ops not available for sendmail programs 
554 5.0.0 Service unavailable 


Thanks,
MD