Cannot send external email

From: Shannon Thompson (Thompson_at_discussions.microsoft.com)
Date: 11/26/04 

Date: Fri, 26 Nov 2004 12:29:02 -0800

We are sending emails using SMTP sending through our Exchange 2000 server
which has the relay turned off. If the email address is internal the email
is sent just fine but if the email address is external I get the following
error: 550.5.7.1 Unable to relay for ..... How do we setup the relay to send
externally but not to allow us to be used as a spam server?

Relevant Pages

  • Re: Exchange issues
    ... Are you up to date on all your Service Packs, both Windows and Exchange? ... > all traffic on port 25 to the SBS Exhange server. ... I suspected SMTP relaying becuase ... > You should verify that the server really isn't an open relay: ...
    (microsoft.public.exchange2000.admin)
  • Re: Help! Being Used As A Relay
    ... Make sure that your Guest account is disabled. ... Installing malwares on the server that could enable me to ... Oh, remove Relay completely. ... address that exists in your org, your Exchange will deliver the mail. ...
    (microsoft.public.exchange.admin)
  • Re: Relay Question
    ... An open relay ... is an SMTP e-mail server that allows third-party relay of e-mail messages. ... Exchange 2003 is by default configured to prevent open relay. ... Microsoft does not control these sites ...
    (microsoft.public.windows.server.sbs)
  • Re: SMTP Relay Best Practice Question
    ... logging enabled on your Exchange server, and see what is happening when you ... MFP device attempts to relay. ... With such a configuration you can have an open relay ...
    (microsoft.public.exchange.admin)
  • RE: Relay problem in Exchange
    ... Open Exchange System Manage. ... On the Access tab, click the Relay button. ... Restart SMTP service on this server. ... Please determine if your exchange server is open relay through telnet to ...
    (microsoft.public.windows.server.sbs)