diff --git a/config/filter.d/postfix.conf b/config/filter.d/postfix.conf
index 1dbc23c0..1cf54f14 100644
--- a/config/filter.d/postfix.conf
+++ b/config/filter.d/postfix.conf
@@ -15,11 +15,11 @@ _daemon = postfix(-\w+)?/(?:submission/|smtps/)?smtp[ds]
 prefregex = ^%(__prefix_line)s(?:NOQUEUE: reject:|improper command pipelining) <F-CONTENT>.+</F-CONTENT>$
 
 failregex = ^RCPT from \S+\[<HOST>\]: 554 5\.7\.1 
-            ^RCPT from \S+\[<HOST>\]: 450 4\.7\.1 Client host rejected: cannot find your (reverse )?hostname, (\[\S*\]); from=<\S*> to=<\S+> proto=ESMTP helo=<\S*>
-            ^RCPT from \S+\[<HOST>\]: 450 4\.7\.1 (<\S+>)?: Helo command rejected: Host not found; from=<\S*> to=<\S*> proto=\S+ helo=.*$
-            ^EHLO from \S+\[<HOST>\]: 504 5\.5\.2 <\S+>: Helo command rejected: need fully-qualified hostname;
+            ^RCPT from \S+\[<HOST>\]: 450 4\.7\.1 Client host rejected: cannot find your (reverse )?hostname\b
+            ^RCPT from \S+\[<HOST>\]: 450 4\.7\.1 (<[^>]*>)?: Helo command rejected: Host not found\b
+            ^EHLO from \S+\[<HOST>\]: 504 5\.5\.2 (<[^>]*>)?: Helo command rejected: need fully-qualified hostname\b
             ^VRFY from \S+\[<HOST>\]: 550 5\.1\.1 
-            ^RCPT from \S+\[<HOST>\]: 450 4\.1\.8 <\S*>: Sender address rejected: Domain not found; from=<\S*> to=<\S+> proto=ESMTP helo=<\S*>$
+            ^RCPT from \S+\[<HOST>\]: 450 4\.1\.8 (<[^>]*>)?: Sender address rejected: Domain not found\b
             ^after \S+ from [^[]*\[<HOST>\]:?
 
 ignoreregex =