--- a/maildrop.c Tue Apr 01 16:15:19 2014 +0500 +++ b/maildrop.c Tue Apr 01 19:34:51 2014 +0500 @@ -143,6 +143,7 @@ size_t i = 0, r; int c; + memset(dst, 0, dst_sz); while ((c = *src++)) { if (i >= dst_sz) break;