From 06bc502cded9d893673218c58520c99b74dd2d4d Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" To Site
Map
-$Date: 2002/12/26 22:06:03 $
+$Date: 2003/01/14 13:11:32 $
@@ -1822,7 +1822,7 @@ accept mail sent to user@my-company.co.uk)
Note that Demon may delete mail on the server which is more than 30 days old; see their POP3 +href="http://www.demon.net/helpdesk/products/mail/sdps-tech.shtml">POP3 page for details.
A permanent reject response is of the form 5xx (like 550).
-You could tell your smtp server to not lookup any addresses if you are +
You could tell your SMTP server to not lookup any addresses if you are not keen on checking the sender addresses. This problem typically occurs if your mail server is not checking the sender addresses, but your local server is.
-Or, you could change the response code to a permanent reject for -lookup failures if you want the previous situation to continue.
+Or you could declare antispam 451
Or, you could check your nameserver configuration and query logs for dns errors.
@@ -3462,7 +3461,7 @@ dns errors. Page