Slet din send connector og lav en ny med de her instruktioner:
# Expand Organization Configuration, click Hub Transport, and then in the action pane, click New Send connector.
# On the New Send Connector wizard Introduction page, in the Name field, type a unique name for the connector. From the Select the intended use for this Send connector drop-down list, select Internet, and then click Next.
# On the Address space page, click Add. In the SMTP Address Space dialog box, type "*" in the Address field, and then click OK. Click Next.
# On the Network settings page, select Use Domain Name System (DNS) to route mail automatically. Select the Use External DNS Lookup settings check box. Click Next.
# On the Source Server page, click Add. In the Select Hub Transport and subscribed Edge Transport servers dialog box, select one or more Hub Transport servers in your organization, click OK, and then click Next.
# On the New Connector page, click New, and then on the Completion page, click Finish.
Følg herefter instruktionerne under "Establish Internet mail flow between a Hub Transport server and an external SMTP gateway by using anonymous relay" her:
http://technet.microsoft.com/en-us/library/bb738161.aspxDu skal selvfølgelig indsætte din internet udbyders SMTP relay som smarthost. Hvis adressen på det ikke står på deres support sider så må du ringe til dem og spørge hvad den er.