I've installed the WHMCS Provisioning module for Smartermail, created a test package, but when I need to create the domain on Smartermail through the WHMCS admin area (client section) it keeps giving me this error:
Module Command Error
One or more of the settings you have specified is invalid.
Does anybody know what it could be? I tried different module settings for the package and in the Servers section, but I really don't know what else to try or what I do wrong, as the error is pretty vague.