1 files changed, 3 insertions, 0 deletions
diff --git a/lib/net/smtp.rb b/lib/net/smtp.rb
index 58cce32a71..84790450bc 100644
--- a/lib/net/smtp.rb
+++ b/lib/net/smtp.rb
@@ -578,6 +578,9 @@ module Net
       logging "TLS connection started"
       s.sync_close = true
       s.connect
+      if @ssl_context.verify_mode != OpenSSL::SSL::VERIFY_NONE
+        s.post_connection_check(@address)
+      end
       s
     end