OX error

[mayank]

hello
im getting this error while creating Users :

Server response:
com.openexchange.admin.plugins.PluginException: com.openexchange.admin.rmi.exceptions.OXUserIMAPEx ception: javax.mail.MessagingException: * BYE Temporary problem, please try again later;
nested exception is:
com.sun.mail.iap.ConnectionException: * BYE Temporary problem, please try again later