diff --git a/ChangeLog b/ChangeLog
index d219b3ce..b8a6ea1c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -27,7 +27,9 @@ ver. 1.1.1-dev-1 (20??/??/??) - development nightly edition
 * `filter.d/freeswitch.conf` - bypass some new info in prefix before [WARNING] (changed default `_pref_line`),
   FreeSWITCH log line prefix has changed in newer versions (gh-3143)
 * `filter.d/lighttpd-auth.conf` - fixed regex (if failures generated by systemd-journal), bypass several prefixes now (gh-3955)
-* `filter.d/postfix.conf` - consider CONNECT and other rejected commands as a valid `_pref` (gh-3800)
+* `filter.d/postfix.conf`:
+  - consider CONNECT and other rejected commands as a valid `_pref` (gh-3800)
+  - default `_daemon` in prefix-line is loosened - can match everything starting with word postfix, like `postfix-example.com/smtpd` (gh-3297)
 * `filter.d/dropbear.conf`:
   - recognizes extra pid/timestamp if logged into stdout/journal, added `journalmatch` (gh-3597)
   - failregex extended to match different format of "Exit before auth" message (gh-3791)
diff --git a/config/filter.d/postfix.conf b/config/filter.d/postfix.conf
index a1882473..a05c3d22 100644
--- a/config/filter.d/postfix.conf
+++ b/config/filter.d/postfix.conf
@@ -10,7 +10,7 @@ before = common.conf
 
 [Definition]
 
-_daemon = postfix(-\w+)?/[^/\[:\s]+(?:/smtp[ds])?
+_daemon = postfix\b([^\[\s]+)?
 _port = (?::\d+)?
 _pref = [A-Z]{4,}