diff --git a/config/filter.d/postfix.conf b/config/filter.d/postfix.conf
index 29866dfae..fb690fb0b 100644
--- a/config/filter.d/postfix.conf
+++ b/config/filter.d/postfix.conf
@@ -37,7 +37,7 @@ mdre-rbl  = ^RCPT from [^[]*\[<HOST>\]%(_port)s: [45]54 [45]\.7\.1 Service unava
 mdpr-more = %(mdpr-normal)s
 mdre-more = %(mdre-normal)s
 
-mdpr-ddos = lost connection after(?! DATA) [A-Z]+
+mdpr-ddos = (?:lost connection after(?! DATA) [A-Z]+|disconnect(?= from \S+(?: \S+=\d+)* auth=0/(?:[1-9]|\d\d+)))
 mdre-ddos = ^from [^[]*\[<HOST>\]%(_port)s:?
 
 mdpr-extra = (?:%(mdpr-auth)s|%(mdpr-normal)s)