Outlook Sending Error 503 Valid Rcpt Command Must Precede Data
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503 Valid Rcpt Command Must Precede Data Outlook 2016
74 Comments Twitter Facebook Google+ Pinterest Print E-mailFor those that are tearing their hair out when getting the "503 valid RCPT command must precede DATA" error (we'll refer to it as
503 Valid Rcpt Command Must Precede Data Outlook 2003
simply the 503 error going forwards) when trying to send email, here are some common solutions that will hopefully get you back up and running. If these don't work, or you need more detail on any of these steps, please read the rest of this article, and its comments, for some more in-depth solutions.Apostrophes - remove any apostrophes (single quotes) or other non-alphabetic 503 valid rcpt command must precede data cpanel characters from your email account name(s).VPN - if your system is trying to connect via a VPN network while you're sending email, you may get this error. Try disconnecting the VPN before sending/ receiving mail.Full mailbox - make sure the mailbox of the affected account is not full or has met/ exceeded its quota. You can uncheck the following option to make sure a copy of all your emails is not being left on the server (note that since the email will be downloaded to your PC after this setting change, you won't be able to access your emails from another location if you do this). In Outlook, browse to Tools > Account Setting > More settings > Advanced > uncheck "leave a copy of this message on the server."SMTP port - use port 26 (instead of the default 25) for outgoing mail.Server authentication - setup your outgoing mail to use outgoing server authentication (sends mail by logging in with your email address and password). In Outlook, browse to Tools > Account Settings > More settings > Advanced and change the outgoing server to ‘Auto.' Next, browse back to More settings
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