diff --git a/filters/postfix.preg b/filters/postfix.preg
index 4b06b81..b10c219 100644
--- a/filters/postfix.preg
+++ b/filters/postfix.preg
@@ -2,11 +2,14 @@
 NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 454 4\.7\.1 Service unavailable; Client host \[[[:print:]]+\] blocked
 NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 454 4\.7\.1 <[[:print:]]+>: Relay access denied
 NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 554 5\.7\.1 <[[:print:]]+>: Relay access denied
-NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 550 5\.1\.1 <[[:print:]]+>: Recipient address rejected: undeliverable address
+NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 554 5\.7\.1 <[[:print:]]+>: Helo command rejected: Access denied
 warning: [[:print:]]+\[<HOST>\]: SASL [A-Z0-9-]+ authentication failed
 # set: defscore=5
+NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 550 5\.1\.1 <[[:print:]]+>: Recipient address rejected: undeliverable address
+NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 550 5\.1\.1 <[[:print:]]+>: Recipient address rejected: User unknown
 NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 504 5\.5\.2 <[[:print:]]+>: Helo command rejected: need fully-qualified hostname
 lost connection after AUTH from [[:print:]]+\[<HOST>\]
 # set: defscore=2
+NOQUEUE: reject: RCPT from [[:print:]]+\[<HOST>\]: 450 4\.7\.1 <[[:print:]]+r>: Unverified 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:]]+\[<HOST>\]: 450 4\.7\.1 Client host rejected