503 Valid RCPT command must precede data

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Hi,

I cannot send emails.

All outgoing emails that i send return with an undeliverable error. I can receive emails ,but i cannot reply to them nor forward them.

New emails that i send are not being delivered also.

As soon as i send an email, i get an error. The error is as follows:

Undeliverable – 503 Valid RCPT command must precede data.  When i send emails using another account they are being delivered but when i send emails from one specific account that is configured in Outlook i get this error. Others on the same network using the same domain do not have this problem. I am the only one.

Error message is below. Please do not mind. I blocked the email address and domain for privacy reasons.

Undeliverable: test

System Administrator

Sent: Mon 4/5/2010 9:36 PM

To:

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

Subject: test

Sent: 4/5/2010 9:36 PM

The following recipient(s) cannot be reached:

on 4/5/2010  9:36 PM

503 Valid RCPT Command must precede DATA

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Best Answer by Chloe Miller

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