diff --git a/exim4/exim4.conf b/exim4/exim4.conf
index 68b6f0f..c6b22f4 100644
--- a/exim4/exim4.conf
+++ b/exim4/exim4.conf
@@ -5,7 +5,7 @@ LOCAL_INTERFACES = <; ::0 ; 0.0.0.0
 CONFDIR = /etc/exim4
 
 LOCAL_DOMAINS = @:localhost:dsearch;/etc/exim.domains
-ETC_MAILNAME = %(mailname)s
+ETC_MAILNAME = lsearch;/etc/mailname
 LOCAL_DELIVERY = mail_spool
 CHECK_RCPT_LOCAL_LOCALPARTS = ^[.] : ^.*[@%%!/|`#&?]
 CHECK_RCPT_REMOTE_LOCALPARTS = ^[./|] : ^.*[@%%!`#&?] : ^.*/\\.\\./