Bluehost Web Hosting Help
Sending Emails Generates Error: 503 valid RCPT command must precede DATA.
Why do I receive error "503 valid RCPT command must precede DATA" when attempting to send email?
This usually is a result of the mail server requiring authentication.
If you are using Outlook 2003, here are the steps to enable authentication:
Note: If you are still having errors, make sure your login username is your full email address and that the password is correct.
- Open Outlook
- Go to Tools | Email Accounts
- "View or change existing e-mail accounts" should already be marked
- Click Next
- Select the Account with the trouble and click Change
- Click on More Settings
- Click on the Outgoing Server Tab
- Click "My outgoing server (SMTP) requires authentication" and make sure "Use same settings as my incoming mail server" is selected
- Click on the Advanced Tab
- Set "Outgoing server (SMTP):" port to 26
- Click OK and then Test Account Settings
- If everything is fine and reports no errors,
- Click Close.
- Click Next.
- Click Finish.
- If an error does occur, it will switch to the Errors tab and display the error
Recommended Help Content
503 Error - No longer able to send email and no changes were made
"503 valid RCPT command must precede DATA" (updated 1045 days ago)
Email not sending from Client or Webmail
Trying to send out emails from multiple email accounts fail from both webmail and third party email clients. Possible Reasons: The maximum emails per hour has been exceeded. This can be caused by forw (updated 29 days ago)
Sending Emails Fail
When setting up an account in Outlook or Outlook Express I get an error saying unable to connect to my SMTP server. (updated 1227 days ago)
Related Help Content
Cannot Send but can Receive Email
Explanantion as to what causes this the happen and how to fix it. (updated 30 days ago)
I cannot send email from Outlook 2003, receive is working.
You can try sending the email on port 26, which is an alternate SMTP port and see if that works for you. For outlook: (updated 737 days ago)
Mozilla Thunderbird Not Sending Emails
I get an error sending with Thunderbird, I can receive fine and I tried sending on Port 26 and it still does not work. How do I fix this problem? (updated 2061 days ago)
Failed sending email from phpBB2
The most common cause is that you are either sending to or sending from an invalid email address. You will want to create a new email address, and change your profile to use a different Email address. (updated 2066 days ago)
Email not reaching remotely hosted email server
My domain's MX records point elsewhere and I cannot send emails to my domain from the web. (updated 1912 days ago)
Email Is Not Reaching To All I Send
I send an email to one person and then do a carbon copy (Cc) to multiple other people. Not everyone is receiving the email, even when I try using blind carbon copy (Bcc). (updated 689 days ago)
Email Attachments - Blocked File Extensions
Why can I not send/receive certain types of attachment? (updated 2026 days ago)
Deleting a large number of emails from an account
There are a large number of emails or spam that need to be deleted from an email account. (updated 2061 days ago)