Make sure your POP3 client is configured to authenticate with the outgoing mail server. So in Outlook Express go into Tools > Accounts, open the properties for your mail account, click on the Servers tab and make sure you have the checkbox checked to authenticate with the Outgoing Server. Hope this helps Mark Fugatt MCT, MCSE, Microsoft Exchange MVP Pentech Office Solutions Inc Tel: 585 586 3890 Fax: 585 249 0316 www.4mcts.com www.exchangetrainer.com -----Original Message----- From: Edvaldo Santiago [mailto:esantiago@xxxxxxxxxxx] Sent: Friday, May 09, 2003 10:04 AM To: [ExchangeList] http://www.MSExchange.org/ I´m sending an e-mail using outlook express and the address refuses open relay. When I use Microsoft Outlook the server doesn't accuse open Relay. Please, could you help me? What I should do about this? Best Regards, ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: mark@xxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')