email server - sendmail problems

[Linux Nick]

I just set up an email server with the help of http://www.aboutdebian.com/internet.htm they walk you through setting up sendmail and ipopd, I did it all successfully but for some reason I cant get it to work, when I try to use the account in outlook I get these error messages, ill mention that this is all offsite as well….im not on the local lan anymore, when I test the connection it says it can find the outgoing mail server, find the incoming mail server, and log onto the incoming mail server, but when it gets to send test email message it fails. This is the error message:   Send test email message: the specified server was found, but there was no response from the server. Please verify that the port and ssl information are correct. Blah blah blah.   What am I doing wrong? is there some setting I am supposed to set to be able to use the email outside the local network? The hostname is ‘superserver’ and the domain is computernick.com so for the incoming address I put superserver.computernick.com and the outgoing server I put computernick.com and my local account login info for the user and pass. I also added another MX record with my domain registar (addresscreation.com) I added superserver.computernick.com, they already had computernick.com in there by default.    This is the first mail server I have ever set up so im a little confused, aboutdebian was the first site I came across that actually spoke English unlike the man pages I sometimes have a hard time getting through.   Let me add that this is the error that I get when I send a message:   Your message did not reach some or all of the intended recipients.         Subject:             test       Sent:                 4/6/2004 12:33 PM   The following recipient(s) could not be reached:         '[EMAIL PROTECTED]' on 4/6/2004 12:33 PM             550 5.7.1 <[EMAIL PROTECTED]>... Relaying denied. Proper authentication required.   And that last line is also in my syslog…..   Any suggestions?   TIA   nick