CPANEL/WHM: How to configure a domain to use Sendgrid SMTP

You are obviously here because you want learn how to configure your Cpanel/WHM managed domain to use SendGrid’s SMTP mail servers. Just follow these easy steps and you will be on your way in no time.

1. Login to your WHM account
2. Click on Service Configuration -> Exim Configuration Manger
3. Click on the Advanced Editor tab

   

4. Find the section called Section: AUTH and paste the following into the text box, substituting in your SendGrid username and password:

   sendgrid_login:
   driver = plaintext
   public_name = LOGIN
   client_send = : <YourSendGridUsername> : <YourSendGridPassword>

   

5. Find the section called Section: PREROUTERS paste the following in the textbox, substituting in your Domain name in the senders line:

   send_via_sendgrid:
   driver = manualroute
   domains = ! +local_domains
   senders = *@<YourDomainHere>
   transport = sendgrid_smtp
   route_list = "* smtp.sendgrid.net::587 byname"
   host_find_failed = defer

   

6. Find the section called Section: TRANSPORTSTART and paste the following in the textbox:

   sendgrid_smtp:
   driver = smtp
   hosts = smtp.sendgrid.net
   hosts_require_auth = smtp.sendgrid.net
   hosts_require_tls = smtp.sendgrid.net

   

Voila! That’s all there is to it!