smtp: recognize if client initiated TLS

Ticket: 7469
2 months ago · 78715a5f3f
parent b5094b00b6
commit 78715a5f3f
1 changed files with 1 additions and 1 deletions
--- a/src/app-layer-smtp.c
+++ b/src/app-layer-smtp.c
@ -1699,7 +1699,7 @@ static AppProto SMTPServerProbingParser(
        return ALPROTO_UNKNOWN;
    }
    AppProto r = ALPROTO_UNKNOWN;
-    if (f->todstbytecnt > 4 && f->alproto_ts == ALPROTO_UNKNOWN) {
+    if (f->todstbytecnt > 4 && (f->alproto_ts == ALPROTO_UNKNOWN || f->alproto_ts == ALPROTO_TLS)) {
        // Only validates SMTP if client side is unknown
        // despite having received bytes.
        r = ALPROTO_SMTP;