<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.16.3"> </HEAD> <BODY> I noticed that for some reason, sendmail is blocking inbound my email messages, in particular users from hotmail.com I am able to send email as a user on my email-server but apparently I am unable to send email to my email server from the Internet such as from hotmail.com. >From maillog, I got: ============ Mar 31 19:12:02 <hostname> sendmail[12669]: ruleset=check_relay, arg1=blu139-omc3-s11.blu139.hotmail.com, arg2=127.0.0.2, relay=blu139-omc3-s11.blu139.hotmail.com [65.55.175.211], reject=553 5.3.0 Rejected due to Open Relay see http://www.ordb.org/lookup/?host= for more information It says above to look at <A HREF="http://www.ordb.org/...">http://www.ordb.org/...</A> and I tried to but apparently it seems that this site is not accessible? Can someone tell me what might be going on? And where is this site entry located in my sendmail configuration files? Thanks! </BODY> </HTML>