I've problem with antispam filter in Thunderbird or other app exclude (Outlook Express),
it doesn't add any specific header or [SPAM] into subject like in Outlook.
This problem is only for me? can anybody help?
In order to be able to check your settings of IS2013 could you please contact our support and provide an fsdiag?Please precise also the version of the mail clients you might have tested.Feel free to refer to this thread when you open the support ticket.