EmailService default connection

Hi,

I used EmailService in my process and I also tried to use default settings for sending email (by checking box labeled as Use Global Settings). But I got error below, and I could not find where I should enter the appropriate values as default email connection settings?

2010-10-18 14:11:19,822 WARN  [com.adobe.workflow.AWS] com.adobe.idp.dsc.email.ConnectionFailedException: Failed to connect to email server: null. Reason: Could not connect to SMTP host: localhost, port: 25
    at com.adobe.idp.dsc.email.EmailServiceImpl.sendMessage(EmailServiceImpl .java:473)
    at com.adobe.idp.dsc.email.EmailServiceImpl.sendWithMapOfAttachments(Ema ilServiceImpl.java:433)
    at com.adobe.idp.dsc.email.EmailServiceImpl.sendWithDocument(EmailServic eImpl.java:344)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces sorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)

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