The default outbound relay provider for email has been changed to SpamTitan. Customers who have opted to use an independent/external spam filter provider may experience a temporary delay in mail flow if the configuration for that independent provider is incomplete and does not include information for both inbound and outbound mail flow. For customers on the Exchange 2013 platform, the outbound mail configuration can be set via the Control Panel. For customers on the Exchange 2010 platform, please open a helpdesk ticket and we will be happy to assist you with setting the necessary configuration.