imaps Provider not found

if i use imaps Service for getting Mail from Exchange, i got Exception:

2005-06-03 16:58:16,570 ERROR [service.services.mail.MailFetcherService] Error getting provider for protocol imaps: javax.mail.NoSuchProviderException: No provider for imaps
javax.mail.NoSuchProviderException: No provider for imaps
at javax.mail.Session.getProvider(Session.java:289)
at javax.mail.Session.getStore(Session.java:363)
at javax.mail.Session.getStore(Session.java:343)
at com.atlassian.jira.service.services.mail.MailFetcherService.run(MailFetcherService.java:130)
at com.atlassian.jira.service.JiraServiceContainer.run(JiraServiceContainer.java:59)
at com.atlassian.jira.service.ServiceRunner.execute(ServiceRunner.java:50)
at org.quartz.core.JobRunShell.run(JobRunShell.java:191)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:516)

Service:
handler: Create Issue Handler
popserver: IT Admin
handler.params: project=WESTINTERN, issuetype=1, reporterusername=extern
usessl: SSL (IMAP/S)