--- a/src/imapfilter.c	2019-11-14 17:45:17.000000000 +0100
+++ b/src/imapfilter.c	2019-11-18 17:40:17.426255653 +0100
@@ -70,8 +70,8 @@
 	opts.truststore = NULL;
 	if (exists_dir("/etc/ssl/certs"))
 		capath = "/etc/ssl/certs";
-	if (exists_file("/etc/ssl/cert.pem"))
-		cafile = "/etc/ssl/cert.pem";
+	if (exists_file("/etc/ssl/certs/ca-bundle.crt"))
+		cafile = "/etc/ssl/certs/ca-bundle.crt";
 
 	env.home = NULL;
 	env.pathmax = -1;