--- 4.5.18/exim.conf-SpamBlockerTechnology-v4.5.18.txt	2019-11-19 16:21:23.842630075 -0700
+++ 4.5.19/exim.conf-SpamBlockerTechnology-v4.5.19.txt	2020-01-09 07:11:20.198635803 -0700
@@ -1,4 +1,4 @@
-# SpamBlockerTechnology* powered exim.conf, Version 4.5.18
+# SpamBlockerTechnology* powered exim.conf, Version 4.5.19
 # August 15, 2018
 # Exim configuration file for DirectAdmin
 # Requires exim.pl as distributed by DirectAdmin here:
@@ -946,6 +946,7 @@
   interface = <; ${if exists{/etc/virtual/domainips}{${lookup{$sender_address_domain}lsearch*{/etc/virtual/domainips}}}}
   helo_data = ${if exists{/etc/virtual/helo_data}{${lookup{$sending_ip_address}iplsearch{/etc/virtual/helo_data}{$value}{$primary_hostname}}}{$primary_hostname}}
   hosts_try_chunking =
+  hosts_try_fastopen =
 .include_if_exists /etc/exim.dkim.conf
 
 #EDIT#62: