Thanks. So on OSX 10.11 mail is hard coded to look for /etc/postfix/main.conf. A bit of a nuisance. So I'll just symlink to my /usr/local/etc/postfix/main.conf
----- From my iPhone. > On 12 Mar 2016, at 9:02 pm, Wietse Venema <wie...@porcupine.org> wrote: > > Robert Chalmers: >> I have /usr/bin/mail on the mac, and it?s looking for /etc/postfix/main.cf >> >> I have rebuilt postfix from source, and relocated it, the files now living >> in /usr/local/etc/postfix >> >> >> So I?m wondering what /usr/bin/mail?s relationship to postfix is? > > /usr/bin/mail sends mail through /usr/sbin/sendmail which is normally a part > of Postfix > or a symlink to a part of Postfix. > > Wietse