Configure sending mail by sendmail in Ubuntu Linux

I need email functionality to send emails from the web server by querying data from MySQL database and email the result to appropriate recipient.

Install sendmail.

Install mailutils.
- ```
sudo apt-get install mailutils
```
Configure the /etc/hosts file, provide your domain name in the following format
- ```
127.0.0.1 localhost yourhostname
```
Configure the sendmail, provide Yes to all when prompt.
- ```
sudo sendmailconfig
```
Find the sendmail path.
- ```
which sendmail
```
Locate the php.ini file.
- ```
locate php.ini
```
Open the php.ini file and provide the result of the “which sendmail” as entry for sendmail_path variable,if entry already exists uncomment it. For my case “which sendmail” output is /usr/sbin/sendmail.
- ```
sendmail_path = "env -i /usr/sbin/sendmail -t -i"
```
Restart Apache server
- ```
sudo service apache2 restart
```
Send a test email:
1. Connect with telnet on port 25
  - ```
  telnet 127.0.0.1 25
```
2. Type the following to see the server works
  - ```
  helo server
```
3. Supply the Sender address
  - ```
  MAIL from: email@yourdomain.com
```
4. Supply the Recipient address
  - ```
  RCPT to: your-email@xyz.com
```
5. Provide the email contents and at the end type the dot(.) in anew line to send email.
  - ```
  Subject: Test email
```
- This is a test email from sendmail.
- ```
.
```
6. Check to see the email arrived, if not found in inbox search it in junk folder.