503 valid rcpt command must precede data

How do I fix 503 valid RCPT command must precede data?

The "Error 503: Valid RCPT order should go before DATA" happens when sending email. It's disclosing to you that your SMTP (active mail) association was not appropriately confirmed by your email worker.

• Step by step procedure

1. In Outlook, click File
2. Snap Account Settings > Account Settings
3. Select your Ecenica email account
4. Snap Change
5. Snap More Settings
6. Select the Outgoing Server tab
7. Check My active worker (SMTP) requires confirmation