Exchange Server Newbee

[dsk525]

Hi All,

I am not really familiar with Exchange Server 2000 (installed in Windows 2000 Small Business Server). My emails are going out successfully, but if I try to send an email from like yahoo, hotmail, etc., the e-mails bounce back with the following reason:

----- The following addresses had permanent fatal errors -----
<adminsitrator@grarec.com>
(reason: 550 5.7.1 Unable to relay for adminsitrator@grarec.com)

----- Transcript of session follows -----
... while talking to mail.grarec.com.:
>>> DATA
<<< 550 5.7.1 Unable to relay for adminsitrator@grarec.com
550 5.1.1 <adminsitrator@grarec.com>... User unknown
<<< 554 5.5.2 No valid recipients

Any progressive instruction on how to resolve this issue would be of tremendous help!

Thank you in advance!

 

[Marcs41]

See Security in

http://www.tek-tips.com/faq.cfm?spid=858

Marc
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