Re: Help with POP3 Setup
- From: "Ilse Van Criekinge" <ilse@xxxxxxxxxxxxxxxx>
- Date: Wed, 1 Jun 2005 17:17:40 +0200
Hello,
when you send a mail by using a POP3 account, you are in fact using SMTP
(POP is a retreive-only protocol...). If you don't configure your client to
authenticate when sending email, your exchange server will not deliver the
message because he thinks it's relay since the mail is submitted anonymously
to your exchange server.
You can solve this by either allowing your clients to relay messages
(properties of your smtp virtual server, relay, and specify by user and/or
ip-address who's allowed to relay) or by letting your clients authenticate
prior to sending mail.
HTH
Ilse
"Josh" <jsawyer@xxxxxxxxxxxxx> wrote in message
news:epvYccnZFHA.1148@xxxxxxxxxxxxxxxxxxxxxxx
> I just need to know how to set up my exchange 2K3
> server so users can use their POP3 accounts to send mail to people out
side
> the domain. It works
> fine for internal mail but I get this error when trying to send mail
outside
> the domain.
>
> +++++++++++++++++++++++++++++++++++++
> The message could not be sent because one of the recipients was rejected
by
> the server. The rejected e-mail address was 'XXXXXX@xxxxxxx'. Subject
'here
> ', Account: 'mustang', Server: 'mustang', Protocol: SMTP, Server Response:
> '550 5.7.1 Unable to relay for XXXXXX@xxxxxxx', Port: 25, Secure(SSL): No,
> Server Error: 550, Error Number: 0x800CCC79
> +++++++++++++++++++++++++++++++++++++
>
>
> TIA
> Josh
>
>
>
.
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