Hi all,
I'm just trying to connect to an IMAP mailserver from JBoss. But all I get is the following exception:

15:07:10,484 ERROR [STDERR] javax.mail.MessagingException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target;
 nested exception is:
 javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
15:07:10,499 ERROR [STDERR] at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:479)
15:07:10,499 ERROR [STDERR] at javax.mail.Service.connect(Service.java:297)
15:07:10,499 ERROR [STDERR] at javax.mail.Service.connect(Service.java:156)
15:07:10,499 ERROR [STDERR] at javax.mail.Service.connect(Service.java:105)

My mail-service.xml looks like following:

 <mbean code="org.jboss.mail.MailService" name="MSTM:service=OrderSMSService">
 <attribute name="JNDIName">java:/ORDERSMS
 </attribute>
 <attribute name="User">me</attribute>
 <attribute name="Password">dontknow</attribute>
 <attribute name="Configuration">
 <configuration>
 <property name="mail.transport.protocol" value="imap" />
 <property name="mail.user" value="me" />
 <property name="mail.password" value="dontknow" />

 <property name="mail.host" value="my.favourite.mailserver.com" />

 <property name="mail.smtp.host" value="my.favourite.mailserver.com" />

 <property name="mail.imap.starttls.enable" value="true" />

 <property name="mail.debug" value="true" />
 </configuration>
 </attribute>
 </mbean>

To access the mailbox I'm using the following code:

Store store = mailSession.getStore("imaps");
 store.connect();

How can I tell JBoss to connect to the IMAP server?

TIA,
Ralf.