1 files changed, 13 insertions, 3 deletions
diff --git a/smtp.c b/smtp.c
index 703b10fd..530d17e4 100644
--- a/smtp.c
+++ b/smtp.c
@@ -97,11 +97,21 @@ int SMTP_from(int sock, const char *from, const char *opts)
     char buf[MSGBUFSIZE];
 
     if (strchr(from, '<'))
-	sprintf(buf, "MAIL FROM: %s", from);
+#ifdef HAVE_SNPRINTF
+	snprintf(buf, sizeof(buf),
+#else
+	sprintf(buf,
+#endif /* HAVE_SNPRINTF */
+		"MAIL FROM: %s", from);
     else
-	sprintf(buf, "MAIL FROM:<%s>", from);
+#ifdef HAVE_SNPRINTF
+    snprintf(buf, sizeof(buf),
+#else
+    sprintf(buf,
+#endif /* HAVE_SNPRINTF */
+	    "MAIL FROM:<%s>", from);
     if (opts)
-	strcat(buf, opts);
+	strncat(buf, opts, sizeof(buf));
     SockPrintf(sock,"%s\r\n", buf);
     if (outlevel >= O_MONITOR)
 	report(stdout, "%cMTP> %s\n", smtp_mode, buf);