How to enable sendmail on EC2 instance?

Question

Hello Forum;

**Question:** *How to I configure my EC2 instance so that websites hosted on it can send mail from forms?*

- I am using cPanel.  
- The PHP mail() function won't work.

host.example.com (cPanel host)  
www.example1.com (need sendmail form for this website)  
www.example2.com (need sendmail form for this website)  
www.example3.com (need sendmail form for this website)  
www.example4.com (need sendmail form for this website)   
www.example5.com (need sendmail form for this website)

Thank you in advance.

Steve_M · Answer

You're free to install and enable sendmail, or any other mail transfer agent such as postfix, on your EC2 instances.

Unfortunately you'll find port 25 is blocked by default to try and prevent spamming. You can request for the port to be opened, the steps are here https://repost.aws/knowledge-center/ec2-port-25-throttle

David Krohn · Answer

Yes, you can configure SES and send it with cPanel through SES.

Here are the links you will need:

https://support.cpanel.net/hc/en-us/articles/360056322734-How-to-Use-Amazon-SES-as-a-Smarthost
https://docs.aws.amazon.com/ses/latest/dg/setting-up.html

How to enable sendmail on EC2 instance?

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