1 files changed, 1 insertions, 1 deletions

diff --git a/smtpd/smtpd.conf b/smtpd/smtpd.conf
index fdb7d87..a093ddf 100644
--- a/smtpd/smtpd.conf
+++ b/smtpd/smtpd.conf
@@ -38,7 +38,7 @@ match from any for domain "topo.tw" action "me"
 match from local for local action "me"
 
 # Allow outgoing emails: authenticated connection only
-action "relay" relay
+action "relay" relay helo mail.topo.tw
 #match from local for any action "relay"
 match auth ! from local for any action "relay"
 match from local for any action "relay"