Outlook email error: 503 valid RCPT command must precede DATA

Dont think its your net connection but odd its intermittent. I wonder if its to specific email addys.
Try the suggestions here http://support.justhosting.ca/index.php?... and see if they help you any

Perfect, nidhi. That was the problem.
The thing is that I recently set my email program (outlook) to check every hour instead of every 5 min. so when before I was sending it had always checked just before, because it was automatic, now this was no longer the case. And the intermittent thing was because if i sent just after the hourly check, obviously it went through without problems.
Thanks a lot...

Cool!

503 valid RCPT command must precede DATA. for this error i have done all the settinges mentioned here even then i am not able to send mails. what would be the problem any body can help us please.

Just in case the link dies!

If you ever encounter this error then this means you must check your email before trying to send mail meaning that our mail server requires authentication, which can be achieved using one of these methods:

A) Pop before smtp -- check your email for new mail before trying to send email. 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.

B) Configure your email client to authenticate automatically by checking the "my server requires authentication" box in your email configuration. You will be able to send mail without having to "pop" your mail box first.

If using MS Outlook, please try the following:

1) Open outlook
2) Go to Tools/Email Accounts
3) Select the Account with the trouble and click Change
4) Click on More Settings
5) Click on Outgoing Server Tab
6) Click "Outgoing Mail Server (SMTP) requires authentication" and make sure "Use same settings as incoming mail server" is selected (see attached image)
7) Click on "Advanced Tab"
8) Set outgoing Port (SMTP) to 26 (if your hosting account is Linux) or 587 if your hosting account is Windows.
9) Click Ok and then Test Account Settings

If it fails on send then repeat starting from 7.

7) Click on Advanced Tab
8) Set outgoing Port (SMTP) to 465 (See attached)
9) Check the box Beside "The server requires an encrypted connection (SSL)".
10 ) Click ok and then Test Account Settings

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thanks a lot nidhi its working now ...

Waled Abdulqawi
ringat.biz

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nidhi you're AWESOME! I've been having this problem for so long and could not figure out how the heck to get around it, but I followed your instructions and the problem is fixed! I can SEND emails now!!! YIPEEEEE!!

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But wait, I'm still getting the error, and I too want to be a Nidhi fan! One of our XP-Outlook 2007 desktops is getting the error message when replying to an email. It is configured the same as the other desktops from an Outlook settings perspective. Any clues? It is weird that it is only when replying to an email. If we create a new email and type in the same address, it goes thru fine.

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Thanks for the heads up - my ISP has changed their spam settings and I needed to TICK "authentication required" in the setup of the mail accounts.

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In my case, it turned out that my email account was full.

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I have the same error, when sending emails from outlook but I'm using IMAP not SMTP, do you have any idea what the problem can be?

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I get the same error when trying to send an email from outlook but I'm using IMAP. Do you have any idea what the problem might be?

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You can also try to look if you didn't exceed your mailbox quota on the webserver. Worked for me.

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hi ,
i get this error when i try to login to my webmail,its beeServer Error in '/' Application.
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Bad Data.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Security.Cryptography.CryptographicException: Bad Data.


Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[CryptographicException: Bad Data.
]
System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) +7596735
System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) +275
SmarterTools.SmarterMail.Remoting.IMail.Login(String initializationStr, Byte[] emailAddress, Byte[] password, Boolean recordLogin) +0
SmarterTools.SmarterMail.Remoting.RemoteMail.Login(String initializationStr, Byte[] email, Byte[] password, Boolean recordLogin) +40
SMWeb05.Login.login(String email, String password) +185
SMWeb05.Login.DoLoginInternal(String username, String password, Boolean rememberMe) +986
SMWeb05.Login.DoLogin(String username, String password, Boolean rememberMe) +21
SMWeb05.Login.DoLogin() +62
SMWeb05.Login.btnEnterClick_Click(Object sender, ImageClickEventArgs e) +5
System.Web.UI.WebControls.ImageButton.OnClick(ImageClickEventArgs e) +108
System.Web.UI.WebControls.ImageButton.RaisePostBackEvent(String eventArgument) +118
System.Web.UI.WebControls.ImageButton.System.Web.UI.IPostBackEventHandler.Raise
PostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565




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Version Information: Microsoft .NET Framework Version:2.0.50727.3603; ASP.NET Version:2.0.50727.3082 n on for weeks,please help.
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Outlook email error: 503 valid RCPT command must precede DATA.
the mail cannot reach the destination.

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Just stumbled on this:
Under User Information in Outlook mail settings (Your Name, Email Address), if the email address is typed wrong, the error comes up. The logon information maybe entered accurately but the difference in the actual email address and the address typed in outlook, can create the same error message.
In this case, none of the other remedies of mail authentication work. So make sure the Email address is types exactly as it should be.

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