Using Postfix to Forward to GMail

apt-get install libsasl2-modules postfix bsd-mailx
Internet site and FQDN

vi /etc/postfix/sasl_passwd
postmap /etc/postfix/sasl_passwd

vi /etc/postfix/main.cf
relayhost = [smtp.gmail.com]:587
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_tls_CAfile = /etc/postfix/cacert.pem
smtp_use_tls = yes

vi /etc/postfix/cacert.pem

systemctl restart postfix

Building GPS Clock on Pi w/ Debian Stretch

Start with Raspbian Stretch Lite

Install most current packages:
apt-get update
apt-get upgrade
apt-get dist-upgrade

Clean up packages:
aptitude search ‘~o’
apt-get autoremove

reboot

Test GPS Sentences:
cat /dev/ttyAMA0

Limit GPS Sentences:
#GPZDA
/bin/echo -e ‘$PMTK314,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0*29\r\n’ > /dev/ttyAMA0

#GPRMC
/bin/echo -e ‘$PMTK314,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0*29\r\n’ > /dev/ttyAMA0

Configure Pi:
raspi-config
configure local >> [*] en_US.UTF-8 UTF-8
timezone >> Chicago
advanced >> Expand filesystem

reboot

Get and Unpack NTP source:
wget http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/ntp-4.2.8p12.tar.gz
tar -zxvf ntp-4.2.8p12.tar.gz

Compile NTP:
apt-get install libcap-dev

./configure –disable-all-clocks –disable-parse-clocks –without-lineeditlibs –enable-NMEA –enable-LOCAL-CLOCK –enable-SHM –enable-linuxcaps –enable-ATOM –enable-pps –with-sntp=no –prefix=/usr