When you are checking for new mail you might receive one of the following errors.
Tip: In many cases error codes are identical between Outlook and Outlook Express. If you search Bing for an error code and find a site which discusses Outlook Express, check it out. Because Outlook and Outlook Express both use the same underlying technology, the cause and the solution may be the same for Outlook.
Error Codes
#5.5.0 smtp;553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
This means the server you are trying to send to is blocking mail sent from your server. You'll need to contact the recipient's administrator or send your message using a different mail server.
553 5.7.1 Sender address rejected: not owned by user
This means you are not using the correct outgoing (SMTP) server authentication settings.
In Outlook 2007, go to Tools, Accounts Settings. In Outlook 2010 and 2013, go to File, Account Settings. Double click on the email account then click More Settings. Select Outgoing Server tab. Select Log on using and enter the username and password that can send using this SMTP server. Enable SPA only if your server supports it.
Mail server errors
Task - Sending reported error (0x80042109) : Outlook cannot connect to your outgoing (SMTP) e-mail server.
Check your outgoing server name, the port number and SSL setting, and the authentication setting. Open the Account Settings dialog, double click on the affected email account. Is the server name correct? Click the More Settings button. Check the authentication settings on the Outgoing server tab, and the port number and SSL settings on the Advanced tab.
Error 0x800CCC0F when sending or receiving email.
Usually caused by Antivirus software scanning email, but antispam scanners may cause Outlook to return this error as well. Disable the email scanning or increase the timeout setting. Also, make sure your firewall is allowing the scanner software to connect to the Internet.
Error 0x800CCC7D when sending email
This error code means you have SSL enabled and your mail server doesn't support SSL. Disable SSL in Tools, Email Accounts, double click on the account, More Settings, Advanced tab. The error message may say that it's a Secure Sockets Layer error.
Error 0x800CCC78 when sending
Verify the address you have entered in the From field is correct. Make sure there are no leading or ending spaces or other simple to overlook typos in your address. Verify sending authentication is correct in the Outgoing server tab of the More Settings dialog.
Error 0x80040119 when sending
"0x80040119" and "Unknown error" error messages when you try to read, send, receive, or delete e-mail in Outlook (814441) Disable the application accessing Outlook's data and restart Outlook. You may need to reboot the computer before Outlook will send.
Error 0x80042108 when receiving messages.
There are a couple of causes for this error. You may have SSL enabled and don't need it or you are running Norton Personal Firewall 2002 or Norton Internet Security software.
Error 0x8004010F when attempting to send and receive
This error is either the result of a corrupt delivery folder setting (POP3, message says Outlook data file cannot be accessed) or a missing or corrupt offline address book (Exchange server mailbox).
More Information
- Troubleshooting error messages that you receive when you are using Outlook and Outlook Express
- Troubleshoot 550, 553, and relay-prohibited errors
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169 Comments on "Common Outlook Outgoing Server (SMTP) Errors"
Task 'doc.control@yan3pdp.com - Sending' reported error (0x800CCC6C) : 'Your outgoing (SMTP) email server has reported an internal error. If you continue to receive this message, contact your server administrator or Internet service provider (ISP). The server responded: 452 4.5.2 451 4.7.0 Temporary server error. Please try again later. PRX4 [DM5PR1101CA0010.namprd11.prod.outlook.com]'
that is an old hosted domain on outlook.com? Is it still reporting errors? If so, how long has it been down?
You saved my day.
I was debugging my eXchange setup with https://www.smtper.net
and i caught an 0x800CCC78.
Suddenly when emailing two employees within the office who both have gmail accounts from my own domain they are not receiving and no bounce back message???
If you are on exchange server, ask the admin to look into it - the exchange logs will show if it was handed off to Google. If so, the problem is on their end. An aggressive spam filter would be my guess in that case.
I'm having a similar problem to Scott's. My Outlook 2010 has been working great for years, but since about 4 days ago, I can receive, but cannot send mail. I get the error message "Establishing an encrypted connection to your outgoing (SMTP) server failed. If this problems continues, notify...". I have an email address on a Godaddy domain, and my smtp is smtpout.secureserver.net. I have played with the 3 ports, 25, 80 and the other listed, but nothing is working. Before this all happened, I did nothing at all. Any help would be greatly appreciated.
Sorry I missed this earlier. I'm assuming it's working by now... the usual cause of email breaking suddenly is a problem with the server. Contact the mail provider or wait - with most providers, problems are often fixed within hours.
Hi Diane
I am having an issue with outlook 2010.
when i send and receive a box opens
with error code 0x8004DF000 -
if i click on the email account folder the message below appears and it will not open.
"cannot expand the folder. the TCP/IP connection was expectedly terminated by the server"
I have other email addresses set up on Outlook 2010 and they are all working fine. they are unever gmail accounts. The problem account is btopenworld / btinternet.
any ideas?
Sorry I missed this earlier. Verify the port # and security settings are correct. Use SPA option should not be checked unless your provider explicitly tells you to use it.
This was not an outlook.com account? (There were issues with those last week.)
Was an update installed? That would be the most likely cause of connection issues.
What port # and encryption are you using? See https://www.slipstick.com/outlook/config/online-services-in-outlook/#gmail
I don't think it is this: https://www.outlook-tips.net/tips/gmail-outlook-unable-connect-password-prompts/ - your error message is wrong and the setting should not have changed on it's own.
Most companies would not want any email client belonging to a quest to use their smtp server - it could result in spam being sent from the network and get them blacklisted. You need to properly configure Outlook to use your own smtp server - try port 465/SSL or 587/TLS. See https://www.slipstick.com/outlook/email/send-mail-when-traveling/ for more information.