[Evolution] sendmail faild with error 67?

[Rob Brown-Bayliss <rob ZOOstation cc>]

Hi, I was sending an emial, and (while online) evolution hanged for a
while waiting for sendmail, and I got the error mail not sent, sendmail
returned error 67, yet a quick mailq on the shell shows the mail in the
outbound mail queue.

Any clues?

-- 

  Rob Brown-Bayliss
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  www.ZOOstation.cc