diff --git a/set_myhostname.sh b/set_myhostname.sh
new file mode 100644
index 0000000..a88dad5
--- /dev/null
+++ b/set_myhostname.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+IP=$(curl ifconfig.me)
+curl_retval=$?
+host_answer=$(host "$IP")
+rev_dns="${host_answer##* }"
+rev_dns="${rev_dns%.}"
+
+echo "Rev. DNS is: $rev_dns"
+
+sed -e "s/^myhostname.*/myhostname = $rev_dns ses/" /etc/postfix/main.cf
+
+echo $curl_retval