oops... sorry didn't read the remainder of your message. ----- Original Message ----- From: <vsina@xxxxxxx> To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx> Sent: Thursday, February 06, 2003 11:15 AM Subject: [exchangelist] HELP!!! URGENT POP3 relay problem > http://www.MSExchange.org/ > > I am desperate so I would greatly appreciate some assistance with the > following problem: > > We run Exchange 2000 using POP3 with Netscape as the client. Several > months ago our mail server was used as a open relay station. We have > closed the relay but ever since then we've been having the following > problem: > > Users are able to receive their exchange email regardless of which ISP > they are using. All users are able to send emails locally through their > ISP to anyusername@xxxxxxxxxxxxxx However, only users who are using > dial-up from home are able to send email messages to domains other than > ours. When ssers with cable modem/DSL for ISP attempt to send email to a > domain other than ours they receive the following error message: "5.7.1 > unable to relay for username@xxxxxxx please check the message recipients > and try again". > > Our default SMTP relay restrictions are set up for "Only the list below" > and ourdomain.com is granted access (NOTE: we do not have STMP connectors > setup; do we need to?). The "Allow all computers which successfully > authenticate to relay, regardless of the list above" box is checked. I > know that in Outlook Express there is a selection for "my server requires > authentication", but I don't see such a setting in Netscape. Is this the > problem? We also have a firewall in place. Could our firewall be the > problem? > > I have read through tons of stuff on the web and gotten some great > information, but I still haven't resolved the issue. PLEASE HELP!!! > > TIA, > Valerie > > ------------------------------------------------------ > 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: craig_weil@xxxxxxxxxxx > To unsubscribe send a blank email to $subst('Email.Unsub') >