503 This mail server requires authentication. Please check your mail client settings.

Hi all,

I get this message in my SMTP eventlog and the mail never get sent. Could someone plz help me?

I have IIS 5.1 in Windows XP Pro and I am using alittle program to autosend email with ASP.

I have following mail components installed on my server:

1. MailEnable installed (it comes with SMTP service)
2. Installed and registered CDONTS.dll on my server

I get this in my SMTP eventlog:
==================
503 This mail server requires authentication. Please check your mail client settings.
==================

However I can send email to my own domain name email address without any problems.

 

 

 

 

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