mutt no longer sending mail

[Ben Altman]

I accidentally removed parts of my cygwin installation. I reinstalled
it with mutt, sendmail and ssmtp. I ran ssmtp-config and set it up as
before with some minor modifications afterwards to
/etc/ssmtp/ssmtp.conf. I also compared it to another machine I have
and the files were basically the same. Despite this, when I do a basic
test that used to work, it now gives me an error:
    Error sending message, child exited 127 (Exec error.).
    Could not send the message.

I do have another machine where it is working and an installation of
babun on the same machine as the one where it is not working that does
have mutt working but I would like to get it working with cygwin on
the machine I messed up. I googled around without success and was
wondering if anyone could make some suggestions that would help me in
this situation?

Thanks,
Ben

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