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I'm using the webmin gui to access sendmail config. I can send mail to user boxes on the local host, and I can send mail to addresses outside of our network, but I'm not able to send mail to users on our network. It returns with the message:
The original message was received at Fri, 6 Mar 2009 11:06:59 -0600
----- The following addresses had permanent fatal errors -----
(reason: 550 5.1.1 <email@example.com>... User unknown)
(expanded from: firstname.lastname@example.org)
----- Transcript of session follows -----
... while talking to [127.0.0.1]:
<<< 550 5.1.1 <email@example.com>... User unknown
550 5.1.1 firstname.lastname@example.org... User unknown
<<< 503 5.0.0 Need RCPT (recipient)
Any ideas what might cause this?
[edited by: coopster at 3:50 pm (utc) on Mar. 6, 2009]
[edit reason] please use example.com, thanks! [/edit]
If you are using a standard linux distribution, then you need to update the mailer tables to tell your web server to relay the email to your mail server.