The sm-client in sendmail, where can I read about it. What it does, what its supposed to do etc. man sendmail knows nothing man sm-client knows nothing (this grep covers the sendmail README $ grep -rl sm-client /usr/share/sendmail* /usr/share/sendmail-cf/cf/submit.cf /usr/share/sendmail-cf/cf/submit.mc /usr/share/sendmail-cf/feature/msp.m4 Only appear in several cf files, but no explanation given. (This grep covers the sendmail faq) grep -r sm-client /usr/share/doc/sendmail* <nothing> For something that has caused quite a lot of grief, there is suprisingly little said about it. Where can I get the full story?