diff --git a/roles/mail/files/sender_blacklist b/roles/mail/files/sender_blacklist
index 4a8741d..203d6a2 100644
--- a/roles/mail/files/sender_blacklist
+++ b/roles/mail/files/sender_blacklist
@@ -5,3 +5,4 @@ forestanes.pics    REJECT
 stockcard.io       REJECT
 zapingers.autos    REJECT
 sina.buffy@avantgarde-experts.de OK
+@avantgarde-experts.de OK