fix STARTTLS prompt in SMTP
diff --git a/src/mail/ngx_mail_smtp_handler.c b/src/mail/ngx_mail_smtp_handler.c
index 84722f4..6a49a0a 100644
--- a/src/mail/ngx_mail_smtp_handler.c
+++ b/src/mail/ngx_mail_smtp_handler.c
@@ -29,6 +29,7 @@
static u_char smtp_ok[] = "250 2.0.0 OK" CRLF;
static u_char smtp_bye[] = "221 2.0.0 Bye" CRLF;
+static u_char smtp_starttls[] = "220 2.0.0 Start TLS" CRLF;
static u_char smtp_next[] = "334 " CRLF;
static u_char smtp_username[] = "334 VXNlcm5hbWU6" CRLF;
static u_char smtp_password[] = "334 UGFzc3dvcmQ6" CRLF;
@@ -250,6 +251,8 @@
case NGX_SMTP_STARTTLS:
rc = ngx_mail_smtp_starttls(s, c);
+ s->out.len = sizeof(smtp_starttls) - 1;
+ s->out.data = smtp_starttls;
break;
default:
