I get Relaying Denied when I POP into server

[Michele Neylon :: Blacknight Solutions]

Do you have pop before smtp running?

Mr. Michele Neylon
Blacknight Internet Solutions Ltd
http://www.blacknightsolutions.ie/
http://www.search.ie/
Tel. + 353 (0)59 9137101
Lowest price domains in Ireland

> -----Original Message-----
> From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK]On
> Behalf Of YoloIts
> Sent: 30 March 2004 23:19
> To: MAILSCANNER at JISCMAIL.AC.UK
> Subject: [MAILSCANNER] I get Relaying Denied when I POP into server
>
>
> I have a Red Hat Linux server running Sendmail with Mailscanner.  It has a
> private IP address behind my firewall.  I have a Windows domain controller
> with no public IPs and no public domain name which is also behind my
> firewall.  When I setup Outlook Express to POP into the Linux server I get
> the following response from Outlook Express.
>
>
>
> The message could not be sent because one of the recipients was
> rejected by
> the server. The rejected e-mail address was 'smith at PACBELL.NET'. Subject
> 'test', Account: 'mail.ycoe.net', Server: 'mail.ycoe.net', Protocol: SMTP,
> Server Response: '550 5.7.1 <smith at PACBELL.NET>... Relaying
> denied. IP name
> lookup failed [172.28.16.254]', Port: 25, Secure(SSL): No, Server Error:
> 550, Error Number: 0x800CCC79
>
>
>
> My Linux mail server and the Windows domain controller are both
> running DNS
> and I have them set up to pull zone transfers but I still get the message
> "IP name lookup failed"  What am I doing wrong or what do I need to do?
>
>
>
> Thanks
>