The SMTP Server is the outgoing mail server. When the universal email script runs, it creates the email message, then passes it to the SMTP server. From there, it is up to the SMTP server to relay the message to the recipient.
They SMTP server is maintained by the host. If you are not sure of the server address to use, you will need to contact them.
It does not look like host monster offers support for the standard mail object in Universal Email. though it seams they support Pear Mail.
You will need to configure the server settings tab (Click on the envelop icon) in universal email to use the Pear mail for SMTP method instead of the standard mail object.
Host monster will be able to tell you the settings that should be used for the SMTP server, port and Path To pear.
