diff --git a/ctrl/dnsbl_exempt.cfg b/ctrl/dnsbl_exempt.cfg
index 3e6b03cca30c6dd35c28aed8f7ba7ae65252fbf5..d213120059413946406d5df37cc2b110b34784f9 100644
--- a/ctrl/dnsbl_exempt.cfg
+++ b/ctrl/dnsbl_exempt.cfg
@@ -1,3 +1,4 @@
 ; List IP address or hostnames (one per line) of SMTP servers
 ; which are exempt from DNS-Blacklist checking
-67.112.225.*
\ No newline at end of file
+*.synchro.net
+64.148.159.*
\ No newline at end of file