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email-error-code:mail-error-503-valid-rcpt-command-must-precede-data

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email-error-code:mail-error-503-valid-rcpt-command-must-precede-data [2019/04/22 06:49] (current)
t7udy9 created
Line 1: Line 1:
 +====== Mail Error 503 valid RCPT command must precede DATA ======
  
 +When sending email, if you receive an immediate bounceback, such as the following:
 +
 +
 +
 +Subject: RE: XXXXXX - DATE/​DATE/​DATE
 +
 +Sent: DATE/​DATE/​DATE
 +
 +
 +
 +The following recipient(s) could not be reached:
 +
 +'John Smith' on DATE/​DATE/​DATE
 +
 +503 valid RCPT command must precede DATA
 +
 +
 +
 +----------------------------------------------
 +
 +
 +
 +This means that before sending email, you must set up authentication,​ which is required by dotCanada'​s mail servers. To do this, simply follow these steps:
 +
 +POP before SMTP
 +
 +Action: Check your email for new mail before trying to send out any email.
 +
 +What this does: This adds your IP address to a relayhosts file and allows any email to be sent from that IP address for up to 30 minutes. After 30 minutes, you have to authenticate again.
 +
 +Configure your email client to authenticate automatically
 +
 +Action: Check the "my server requires authentication"​ box in your email configuration.
 +
 +What this does: You will be able to send mail without having to "​pop"​ your mail box first.
 +
 +If using Microsoft Outlook, please try the following:
 +
 +Open Outlook.
 +
 +Go to Tools > Email Accounts.
 +
 +Select the Account that is causing you trouble and click “Change”.
 +
 +Click on More Settings.
 +
 +Click on Outgoing Server Tab.
 +
 +Click "​Outgoing Mail Server (SMTP) requires authentication"​ and make sure "Use same settings as incoming mail server"​ is selected.
 +
 +Click on "​Advanced Tab".
 +
 +Set outgoing Port (SMTP) to 587.
 +
 +Click OK and then Test Account Settings.
 +
 +{{ :​email:​outlook-2016-fix-503-valid-rcpt-error-authentication-settings.jpg?​400 |}}
 +
 +
 +
 +If it fails on Send, then repeat these steps:
 +
 +Click on "​Advanced Tab".
 +
 +Set outgoing Port (SMTP) to 26.
 +
 +Click OK and then Test Account Settings.
email-error-code/mail-error-503-valid-rcpt-command-must-precede-data.txt · Last modified: 2019/04/22 06:49 by t7udy9