As of version 1.0.0 NodeBB has by default enabled sendmail transport plugin. So it's enough to make available "sendmail" command in your system.
For example on Debian Jessie with postfix installed you can do so with symlink:
ln -s /usr/sbin/sendmail /usr/local/bin/sendmail
and test it like:
echo "Test mail" | sendmail -i -f firstname.lastname@example.org email@example.com
If you want, feel free to share the config above - works with redis - not mongo - which is fine with me bc I prefer redis all day anyhow. it's 30 times quicker and smarter in my limited experience with mongo - you know it picked up the data i already had in mongo and I didn't even do anything :-). This could have been the forever logs - but I have no idea - node is new to me - but i'm starting to really like it.
Would you happen to have your upstart script that you use to keep your forums going on reboot? Or method that you use? Like specific - that will be the icing on the cake for me.