I'm not a tester, but I thought I would note
that sendmail-8.15.2-6.fc24.x86_64 does not appear to work for me
under Fedora-24 beta.
If anyone else is using it without problem, please ignore this report.
I was running KMail with the sendmail option for sending email,
and this failed with the error "Failed to transmit message".
When I changed to using a remote email server, KMail worked fine,
so I assume the problem was with sendmail.
I'm afraid I didn't study the problem seriously.
I simply observed that journalctl had the entry
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sendmail.service: PID file /run/sendmail.pid not readable (yet?)
after start: No such file or directory
and the following, repeated several times
May 25 23:14:52
william.gayleard.com ksmserver[1395]:
QXcbWindow: Unhandled client message: "_NET_CURRENT_DESKTOP"
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--
Timothy Murphy
gayleard /at/
eircom.net
School of Mathematics, Trinity College, Dublin