[Mailman-Users] wrapper not available for sendmail programs?

[Ismet Dere]

hello all,

i've installed mailman, it seem working fine until i send a message to my mailing list,
then i got this error message back,

=========
   ----- The following addresses had permanent fatal errors -----
"|/home/mailman/mail/wrapper post mylist2"
    (reason: service unavailable)
    (expanded from: <mylist2 at fiducia-china.com>)

   ----- Transcript of session follows -----
smrsh: wrapper not available for sendmail programs
554 5.0.0 "|/home/mailman/mail/wrapper post mylist2"... Service unavailable
==========

anyone know why this "wrapper not available for sendmail programs"?

i apreciate any help.
ismet
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