From 6867509f5e1d42791120a315cb0dd9d953e2ff8c Mon Sep 17 00:00:00 2001
From: mdecimus <mauro@stalw.art>
Date: Thu, 6 Jun 2024 09:22:39 +0200
Subject: [PATCH] Do not announce STARTTLS if the listener does not support it

---
 crates/smtp/src/inbound/ehlo.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/smtp/src/inbound/ehlo.rs b/crates/smtp/src/inbound/ehlo.rs
index c049502c..acae9911 100644
--- a/crates/smtp/src/inbound/ehlo.rs
+++ b/crates/smtp/src/inbound/ehlo.rs
@@ -123,7 +123,7 @@ impl<T: SessionStream> Session<T> {
         let mut response = EhloResponse::new(self.hostname.as_str());
         response.capabilities =
             EXT_ENHANCED_STATUS_CODES | EXT_8BIT_MIME | EXT_BINARY_MIME | EXT_SMTP_UTF8;
-        if !self.stream.is_tls() {
+        if !self.stream.is_tls() && self.instance.acceptor.is_tls() {
             response.capabilities |= EXT_START_TLS;
         }
         let ec = &self.core.core.smtp.session.extensions;