Comment 3 for bug 43752

The cause of bug relates to the starting of network interfaces during the /etc/rc0.d/ phase of startup, and the contents of these files are responsible:

/etc/network/if-down.d/sendmail

and

/etc/network/if-up.d/sendmail

These files re-configure sendmail on boot, supposedly only if there's been changes that require the sendmail config to change, but in reality cause the error that was reported.

It happens because these files get called when filesystem is read-only, so the newly generated sendmail config files cannot be saved.

My tempory solution has been to remove the 2 files refered to above, until someone more skilled than myself works out how to do what they were meant to do without errors.

Hope that helps other people with the same problem.