0 Sendmail sending mail from Gmail

Sendmail with Gmail - is one of easiest ways to send mail with system notifications.

This Sendmail&Gmail configuration is tested and works on Ubuntu 11.04 - 14.10.

# At first we must setup sendmail and utilities.

sudo apt-get install sendmail sasl2-bin

# Sharutils are used to send binary files as attachments.

sudo apt-get install sharutils

sudo /usr/sbin/sendmail -d0.1 -bv root

# In output find , SASLv2 and STARTTLS. If they are present, all is ok.

# Now move to mail directory : /etc/mail

cd /etc/mail

# Create file with name authinfo

sudo touch authinfo

sudo nano authinfo

Add folowing lines. Edit them to match your e-mail and password.

AuthInfo:smtp.gmail.com "U:username" "I:username@gmail.com" "P:password" "M:PLAIN"

AuthInfo:smtp.gmail.com:587 "U:username" "I:username@gmail.com" "P:password" "M:PLAIN"

Save configuration by : Ctrl+O , Ctrl+X

Execute command :

sudo makemap -r hash authinfo.db < authinfo

Now we have to make sasl.m4 file in /etc/mail/sasl/ directory.

For that, execute in terminal :

make

When that’s done, we need to add our configuration to sendmail.mc file.

sudo nano sendmail.mc

Scroll to the end of file and add these lines :

dnl #

include(`/etc/mail/m4/dialup.m4')dnl

include(`/etc/mail/m4/provider.m4')dnl

include(`/etc/mail/tls/starttls.m4')dnl

include(`/etc/mail/sasl/sasl.m4')dnl

FEATURE(`authinfo', `hash /etc/mail/authinfo.db')dnl

define(`SMART_HOST',`smtp.gmail.com')dnl

define(`RELAY_MAILER_ARGS', `TCP $h 587')dnl

define(`ESMTP_MAILER_ARGS', `TCP $h 587')dnl

dnl #

dnl # Default Mailer setup

MAILER_DEFINITIONS

MAILER(`local')dnl

MAILER(`smtp')dnl

Save configuration file: Ctrl+O , Ctrl+X

Now we need to reconfigure sendmail again.

To do that , execute in terminal :

sudo make

/etc/init.d/sendmail reload

That’s all. Your mail relay is ready for sending mail.

To send mail you can use following commands :

• This will send a e-mail with message „This is Test” , subject will be „Subject about subject”  to e-mail address username@gmail.com. 

echo "This is Test" | sudo mail -s "Subject about subject" username@gmail.com

• This will send a e-mail with message from text file mail_report.txt , subject will be „Daily Report”  to e-mail address username@gmail.com.

mail -s "Daily Report" username@gmail.com  < /home/janis/mail_report.txt

• This will send a e-mail with attached text file mail_report.txt , subject will be „Daily Report”  to e-mail address username@gmail.com

For this we installed Sharutils earlier. Uuencode is a part of this package

uuencode mail_report.txt mail_report.txt | mail -s "Daily Report" username@gmail.com

Links :   http://www.shelldorado.com/articles/mailattachments.html