How To Install And Configure Postfix On Ubuntu Linux To Send Email Using Gmail As Mail Relay

38 thoughts on “How To Install And Configure Postfix On Ubuntu Linux To Send Email Using Gmail As Mail Relay”

• Hello bro, postfix can only send emails? Is it possible to also receive emails with the DMARC rule?

• Gracias!! Funcionó 09-07-2021 sólo no olvidemos configurar la cuenta de gmail por que si no bloquea las solicitudes.

• Indians explain everything with no BS and no annoying background music. Very thorough in the step-by-step. I love it.

• it's working in 2020, amazing sir…thanks for sharing with us.

• why do i keep getting network is unreachable?

• thanks alott anna!! can u make a course in utube explaining what each step means and why we do it!

• Thanks it really helped ..I think you missed the step of authentication of gmail for "Less secure app access". After that its working fine..

• Seeing ' SASL authentication failed; server smtp.gmail.com[173.194.68.109] said: 534-5.7.9 Please log in to your gamil account with your web browser and then open another tab with this url and click Continue. @t to 'bypass' the captcha, which will enable the account access and get everything working.

• in log it says, …. status=deferred (connect to smtp.gmail.com[2607:f8b0:400e:c08::6c]:587: Network is unreachable)

• in log it says…., status=deferred (SASL authentication failed; cannot authenticate to server smtp.gmail.com[74.125.142.108]

• Thanks man, you saved my life

• hi i got the error fatal: valid hostname or network address required in server description: ['smtp.gmail.com']:587 how can i resolve this

  Please reply asap

• https://www.freecodecamp.org/news/how-to-properly-send-secure-tls-email-from-your-ubuntu-server-using-postfix-spf-dkim-and-dmarc/ this could be useful too for many..

• thanks man

• VERY EXCELLENT, AM REALLY GLAD. THANKS VERY MUCH

• Are you using your laptop's microphone?

• Thanks alot for this help

• Hi, Could you please help me ??

  I 've done everything you show.

  But when iam trying to send an email from my gmail acc, google blocks the requests.

  Thanks in advance.

• Also works for ubuntu 18.04 LTS version. Thanks Man !! Can I receive mail from gmail using this method??

• Hi,

  I followed all the steps. And in the log file I can see that the email is delivered, but why am I not getting the email on gmail account? I'm using office365 to send the email

• Which version ur using ubuntu

• How to open received email?

• I am getting connection refused

  also I have a question when adding the username and password in /etc/postfix/sasl_passwd
  does it have to be a gmail account or any username and password will work?

• I checked the mail.log file and it says “SASL authentication failed;cannot authenticate to server smtp.gmail.com[64.233.176.109] : no mechanism available”.
  [2607:………..6c]: 587: network is unreachable.
  Help me out,please.

• finally something work thanks bro

• i am getting this error after echo "message body" | mail -s "test subject" demo@gmail.com
  Can't canonicalize "/home/demo/Maildir"
  /home/demo/Maildir/sent: No such file or directory
  Failed to save message in "/home/demo/Maildir/sent" – message not sent
  "/home/demo/dead.letter" 6/124

• but bro i missed my main() file . how should i manage.

• Good video with proper commands and configuration files explained.. keep it up ..

• Very Boring Lecture

• Thank you for your tutorial. how to send html email format using postfix ?

• can i use protocol <SSL: 465> insted of <TLS: 587> if yes what is the confg, please ?

  by the way thx you, well done

• Running newaliases
  newaliases: warning: valid_hostname: misplaced delimiter: sadhna-VPCEH3AEN..name
  newaliases: fatal: file /etc/postfix/main.cf: parameter myhostname: bad parameter value: sadhna-VPCEH3AEN..name
  dpkg: error processing package postfix (–configure):
  subprocess installed post-installation script returned error exit status 75
  Processing triggers for libc-bin (2.23-0ubuntu3) …
  Processing triggers for systemd (229-4ubuntu10) …
  Processing triggers for ureadahead (0.100.0-19) …
  Processing triggers for ufw (0.35-0ubuntu2) …
  Errors were encountered while processing:
  libroot-proof-dev
  postfix
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  I am getting this error while installing Postfix..Please help.

• I have followed the same steps but getting STATUS=BOUNCED ([smtp.gmail.com]:587) in the log file
  Please help

• great video … your video was helpful for configuring server from http://www.datasoft.ws

• Hi,
  Thank you for your tutorial. After unsuccessfully following multiple blogs, this video finally helped me resolve my issue. You are the best!

• if your setup is not working, please look at this guys https://opensourceinside.blogspot.com/2016/09/how-to-install-and-configure-postfix-to.html

• don't forget to check his link in the description if this isn't working for you

• for this to work i needed to change the relayhost to:

  relayhost = [smtp.gmail.com]:587

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