Outlook Error codes
Outlook Express messages
IMAP and POP3
An unknown error has occurred. Subject 'test', Account: 'mail.domain.com', Server: 'mail.domain.com', Protocol: SMTP, Server Response: '550 External MTA's must be authenticated in order to send e-mails', Port: 465, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC69
Needs Outgoing Server Requires Authentication checked.
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IMAP
Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity.
POP3
Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Account: 'mail.domain.com', Server: 'mail.domain.com', Protocol: POP3, Port: 110, Secure(SSL): Yes, Error Number: 0x800CCC0F
Customer is using a secure connection, but regular incoming port. Should be 993 for IMAP and 995 for POP3.
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Official descriptions from Microsoft
0x800CCC65 -- This error code is indicative that a local firewall such as Zone Alarm or anti-virus software such as NOD32, Norton Antivirus, or McAfee is blocking outgoing connections to your mail server. Try disabling any of this software and see if this error still persists.
0x800CCC78 -- Your sender address must be a full email address not simply a username. Please set up your account in Outlook/Outlook Express to use a full account name such as username@mydomain.com instead of simply 'username'
0x800CCC79 -- Please make sure that your client is set up to authenticate SMTP before POP as this is what the error code 0x800CCC79 indicates is the problem.
0x800CCC92 -- Please access your cPanel as the error 0x800CCC92 indicates, there may be a problem with the password for the email account in question or that the email account has become corrupted.
0x8004210B -- Please check the following Microsoft Documentation link as this is a client-side issue: http://support.microsoft.com/kb/827349 .
0x8004210A -- Please check the following Microsoft Documentation link as it is client-side: http://support.microsoft.com/kb/827349 .
0x800C0133 -- Please check the following Microsoft newsgroup link as it seems that your Outlook Express mail store is corrupt: https://www.microsoft.com/communities/newsgroups/en-us/...
If that does not work, please see this link for information on disabling your virus scanner's Outlook Express integration. http://www.microsoft.com/communities/newsgroups/en-us/...
0x800CCC19 -- Please check the following Microsoft Documentation link as it it seems to be a client-side problem with local anti-virus software: http://support.microsoft.com/kb/813518 .
0x800CCC0D -- Please check the following Microsoft Documentation link as it describes common work fixes for the error you're experiencing: http://support.microsoft.com/kb/813514 .
0x800CCC0E -- Please check the following Microsoft Documentation link as it describes how your ISP is blocking ports needed for email access: http://support.microsoft.com/kb/191687 .
0x800CCC0F -- Please check the following Microsoft Documentation link as it could be due to many things client-side from local firewalls: http://support.microsoft.com/kb/813514 .
0x800CCC0B -- Please check the following Microsoft Documentation link as it describes common work fixes for the error you're experiencing: http://support.microsoft.com/kb/827349 .
Below you will find the most common solutions to fix the above problems:
- Shutdown and restart your computer.
- Make sure Outgoing server has selected Requires Authentication.
- Temporarily turn off all virus and/or firewall software.
- Try the ISP's outgoing mail server if the problem persists.
