How to add a senders email or domain to a blocked sender list

[phoenixrising72]

Hi in all my other email programs if I get junk mail I can add the senders email address to a blocked sender list or blocked domain list. Can someone please tell me how to do this in Roundcube? Thanks in advance.

[SKaero]

You would need to do that on the mail server not in RoundCube.

[Sunzoomspark]

When I add a couple of emails of Blocked Senders, there is a little notification that says something to the effect "already added". SO WHY ARETHE EMAILS STILL COMING INTO MY INBOX? Does Blocked Senders work??