Why do I get: "503 Valid RCPT TO <recipient> must precede DATA"?

[Guest]

Every time I attempt to send or reply to an email on my new Microsoft Outlook
2003 I get an immediate reponse that tells me the email is undeliverable.

Your message did not reach some or all of the intended recipients.

Subject: Email Subject
Sent: 19/09/2004 4:11 PM

The following recipient(s) could not be reached:

([email protected]) on 19/09/2004 4:11 PM
503 Valid RCPT TO <recipient> must precede DATA

Can anyone tell me what would cause this error and what I can do to stop it
happening. I have not been able to send emails from Outlook since installing
2003 because of this message.

 

[BillR [MVP]]

do you have a recipient listed properly in the To field?
See if "check account settings" works.

 

[Guest]

I've listed recipients in a number of various ways including direct from the
address book, plain text, etc. And account settings are all normal, I've
tested the account settings and the automated check it does works perfectly.
On occasion sending messages will work but more often than not it won't. I do
not know what is different on the occasions it works. I'm tempted to
uninstall 2003 and put my 2000 back on. I know that one works.

 

[Guest]

I solved it (was googling about it when I came across this suggestion) Turn
on authentication. Tools >> Email Accounts >> (Go into your account and
choose) More Settings >> Outgoing Server and turn on outgoing authentication
set to your normal details. It worked for me so I help it works for everyone
else.