diff --git a/filters/postfix.preg b/filters/postfix.preg
index d1adfb2..bb0d2ab 100644
--- a/filters/postfix.preg
+++ b/filters/postfix.preg
@@ -1,5 +1,7 @@
 NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 450 4\.7\.1 Client host rejected
+NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 450 4\.7\.1 <[[:print:]]+>: Helo command rejected: Host not found
 NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 454 4\.7\.1 Service unavailable; Client host \[[[:print:]]+\] blocked
+NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 504 5\.5\.2 <[[:print:]]+>: Helo command rejected: need fully-qualified hostname
 NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 554 5\.7\.1 .*
 warning: [[:print:]]+\[<HOST>\]: SASL [A-Z0-9-]+ authentication failed
 lost connection after AUTH from [[:print:]]+\[<HOST>\]