The following server property has been added to
'usm.properties' to allow configuration which error
codes reported by OX should trigger a re-login
of USM for its OX sessions:

com.openexchange.usm.ox.relogin_error_codes

Its value is a comma separated list of OX error-codes.
Its default value is: SES-0202,SES-0203,SES-0206