This is tutorial for set up Postfix in macos

prerequired

Saya anggap kalian sudah menginstall Postfix di environment kalian, jika belum, bisa baca ini untuk menginstall Postfix di lokal enviroment kalian.
adapun tool yang dibutuhkan adalah :

• Postfix
• vi (atau text editor kesukaanmu)

Check Postfix

bagaimana caranya mengecek kalau kita sudah meng install Postfix atau belum ? bisa di cek di cmd bila sudah ter install.

$ postfix
postfix: error: to submit mail, use the Postfix sendmail command
postfix: fatal: the postfix command is reserved for the superuser

Edit postfix configuration file

setelah Postfix sudah terinstall maka sekarang giliran untuk configure Postfixnya.

$ sudo vi /etc/postfix/main.cf

pastikan bahwa variabel dibawah tersebut ada pada file main.cf.

mail_owner = _postfix
setgid_group = _postdrop

kemudian tambahkan configure pada akhir.

# Postfix as relay
#
# Gmail SMTP
relayhost=[smtp.gmail.com]:587
# Hotmail SMTP
#relayhost=smtp.live.com:587
# Yahoo SMTP
# relayhost=smtp.mail.yahoo.com:465
# Enable SASL authentication in the Postfix SMTP client.
smtp_sasl_auth_enable=yes
smtp_sasl_password_maps=hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options=noanonymous
smtp_sasl_mechanism_filter=plain
# Enable Transport Layer Security (TLS), i.e. SSL.
smtp_use_tls=yes
smtp_tls_security_level=encrypt
tls_random_source=dev:/dev/urandom

Create sasl_passwd file

jalankan code dibawah untuk membuat password.

$ sudo sh -c 'echo "\n[smtp.gmail.com]:587 your_email@gmail.com:your_password" >> /etc/postfix/sasl_passwd'

Replace your_email@gmail.com and your_password with actual values.

$ sudo postmap /etc/postfix/sasl_passwd

Autorun postfix on boot and restart postfix

sudo cp /System/Library/LaunchDaemons/com.apple.postfix.master.plist /Library/LaunchDaemons/org.postfix.custom.plist


sudo vi /Library/LaunchDaemons/org.postfix.custom.plist

Change the label value from com.apple.postfix.master to org.postfix.custom Remove these lines to prevent exiting after 60s

<string>-e</string>
<string>60</string>

Add these lines before

<key>KeepAlive</key>
<true/>

Relaunch the daemon

sudo launchctl unload /Library/LaunchDaemons/org.postfix.custom.plist
sudo launchctl load /Library/LaunchDaemons/org.postfix.custom.plist

Turn on less secure apps for gmail

In Gmail we must switch on the option “Access for less secure apps”, otherwise we will get the error: SASL authentication failed

Test

+ echo "Test sending email from Postfix" | mail -s "Test Postfix" youremail@domain.com
+ Check mail queue and possible delivery errors with mailq.
+ Check mail log with tail -f /var/log/mail.log.