SMTP Timeouts on Localhost
If you are receiving timeouts while attempting to send email over SMTP on localhost or if you are using a script that sends email that is timing out, you may need to have your cPanel username whitelisted. There are several reasons why timeouts may occur, the most common being interference with the host server firewall.
Joomla Sendmail Option
Many of our customers use scripts such as Joomla, where there is an option allowing users to use Sendmail. A guide for using Sendmail through Joomla can be located at the following link: