diff -Nur qpsmtpd-0.84/plugins/tls qpsmtpd-0.84_bz8926/plugins/tls
--- qpsmtpd-0.84/plugins/tls	2015-05-19 22:39:32.785000000 +0200
+++ qpsmtpd-0.84_bz8926/plugins/tls	2015-05-19 22:41:40.023000000 +0200
@@ -84,6 +84,7 @@
         SSL_key_file => $self->tls_key,
         SSL_ca_file => $self->tls_ca,
         SSL_cipher_list => $self->tls_ciphers,
+        SSL_version => 'SSLv23:!SSLv2:!SSLv3',
         SSL_server => 1
     ) or die "Could not create SSL context: $!";
     # now extract the password...
@@ -202,6 +203,7 @@
             SSL_key_file => $self->tls_key,
             SSL_ca_file => $self->tls_ca,
             SSL_cipher_list => $self->tls_ciphers,
+            SSL_version => 'SSLv23:!SSLv2:!SSLv3',
             SSL_server => 1,
             SSL_reuse_ctx => $self->ssl_context,
         ) or die "Could not create SSL socket: $!";