RE: HELP!!! URGENT POP3 relay problem

  • From: "exchange" <exchange@xxxxxxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Fri, 7 Feb 2003 16:03:12 +0100

Hi there,

Yes I believe that's the problem. Usually most mailclients only sen logon 
credentials to the mailbox, and not the smtpserver, even if they are onm the 
same machine. So, like in Outlook where you specify logon details separately 
for 'outgoing mailserver, you need the same in the Netscape client. If you 
can't find such a setting I don't think it's gonna work...


> -----Original Message-----
> From: vsina@xxxxxxx [mailto:vsina@xxxxxxx] 
> Posted At: den 6 februari 2003 20:15
> Posted To: exchange
> Conversation: [exchangelist] HELP!!! URGENT POP3 relay problem
> Subject: [exchangelist] HELP!!! URGENT POP3 relay problem
> 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 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                 
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