Index: milter-greylist-4.6.1/milter-greylist.c
===================================================================
--- milter-greylist-4.6.1.orig/milter-greylist.c	2016-01-31 06:34:55.000000000 +0100
+++ milter-greylist-4.6.1/milter-greylist.c	2016-09-06 14:00:56.481603203 +0200
@@ -519,13 +519,13 @@
 	strncpy_rmsp(tmpfrom, *envfrom, ADDRLEN);
 	tmpfrom[ADDRLEN] = '\0';
 
-	/* 
+	/* Disabled Schoppa, 6.9.2016
 	 * Strip anything before the last '=' in the
 	 * source address. This avoid problems with
 	 * mailing lists using a unique sender address
 	 * for each retry.
 	 */
-	if ((idx = rindex(tmpfrom, '=')) == NULL)
+	/* if ((idx = rindex(tmpfrom, '=')) == NULL) */
 		idx = tmpfrom;
 
 	strncpy(priv->priv_from, idx, ADDRLEN);
