.B getpwnam
function, which is at the heart of
.BR qmail-getpw ,
-is inherently unreliable.
+is inherently unreliable:
+it fails to distinguish between temporary errors and nonexistent users.
+Future versions of
+.B getpwnam
+should return ETXTBSY to indicate temporary errors
+and ESRCH to indicate nonexistent users.
.SH "RULES"
.B qmail-getpw
considers an account in