Common error code for sending emails

 Common error code for sending emails[Posting]

Q represents a question and a represents a question.
Q: The server says: 550 relaying mail to <> is not allowed
Q: The server says: 550 <>... relaying denied
Q: The server says: 550 5.7.1 relaying not permitted:
A: When Some SMTP servers are used, the recipient's address is limited and only one SMTP server can be used.
Q: The server says: 550 <>: Local User Only
Q: The server says: 550 <>: invalid user
Q: The server says: 550 invalid recipient
A: When using SMTP servers such as 163.net, 163.com, yeah.net, and netease.com, you can only send emails in your inbox, therefore, you must enter the correct email address in "Personal Information" in "account attributes" of Outlook Express.

Q: The server says: 551 delivery not allowed to non-local recipient
Q: The server says: 553 relay restriction.
Q: The server says: 553 from <>, message blocked.
Q: The server says: 553 sorry, you are not allow to use this SMTP to relay your eami
Q: The server says: 553 sorry, that domain isn't in my list of allowed rcpthosts
A: When using SMTP servers in most mailboxes, such as 21cn.com, china.com, 371.net, and sina.com, you can only send emails in your own mailbox, therefore, you must enter the correct email address in "Personal Information" in "account attributes" of Outlook Express.

Q: The server says: 505 client was not authenticated
Q: The server says: 553 authentication is required to send mail as <>
A: When using the SMTP server of 263.net and sohu.com, you must enter the correct email address in "personal information", not only use your own email address for sending emails, but also add authentication, select "SMTP Server Authentication required ".

Q: The server says: 535 error: authenticatin failed
Q: The server says: 535 authentication unsuccessful
Q: The server says: 452 insufficient system storage
A: An error occurred while using ESMTP authentication. Check ESMTP settings and try multiple times.

Q: The server says: 553 <>... domain name required
Q: The server says: 550 unable to relay...
A: When the WinGate Proxy Server is used to send emails. In Wingate, "POP3 mailbox account" must use the "username # POP3 address" format, but the "Personal Information" in "account attributes" must be in the general format.

Q: The server says: 553 mailbox name not allowed
A: The recipient's email address is not allowed. Check whether the recipient's address is correct.

Q: The server says: 553 sorry, your envelop sender is in my badmailfrom list
A: The server limits the recipient's address and can only send emails to one SMTP server.

Q: The server says: 554 transaction failed
Q: The server says: 451 requested action aborted, errno = 28
A: Transmission failed. Check for network problems.

Q: The server says: 503 error: needmail command
Q: The server says: 503 need mail before RCPT.
Q: The server safety: 503 bad sequence of commands
A: an error occurs in the order of message commands. Generally, after other errors occur, check the previous error prompt.

Q: The server says: 501 syntax. Helo hostname
Q: The server says: 501 invalid domain name
Q: The server says: 502 unimplemented command
Q: The server says: 503 5.0.0 polite people say helo first
Q: The server says: 533 relay restriction
Q: The server says: 544 <>: Recipient address rejected: Relay Access Denied
A: The cause of the syntax error during transmission is unknown.

Outlook Express error code table
Common error codes

0x800c0131 may be caused by incorrect or corrupt folders. DBX file attributes.
0x800c013e may be caused by incorrect or corrupt folders. DBX file attributes.
0x800ccc00 Authentication Not loaded
0x800ccc01 certificate content error
0x800ccc02 authentication date Error
0x800ccc03 user connected
0x800ccc05 not connected to the server
0x800ccc0a email download unfinished
0x800ccc0b server busy
0x800ccc0d cannot find the host (check whether your SMTP server is set up incorrectly or the other server is faulty, for example, the mail server is not started, and the other DNS server is dead)
0x800ccc0e failed to connect to the server and cannot be connected to the host. Maybe the other host is being maintained, or the network quality is poor, the server is shut down, the email server is not started, and so on. Wait a while and try again.
If your anti-virus software has features similar to "email Protection", we recommend that you disable "email protection" before sending and receiving emails. Learn from your experience that, sometimes, due to the interference of anti-virus software "email Protection", emails cannot be sent or received.
0x800ccc0f server end connection (this is easily caused by heavy load on the other server and network transmission congestion. You can try to increase the waiting time when you renew the connection, or change the ISP with better connection quality)
0x800ccc10 server cannot recognize this email address
0x800ccc11 unrecognized mailing list on the server
0x800ccc12 unable to send Winsock request
0x800ccc13 cannot receive Winsock reply
0x800ccc14 cannot start Winsock
0x800ccc15 cannot enable Windows Socket
0x800ccc16 the user account cannot be identified. The user account is incorrect.
0x800ccc17 user interrupted operation
0x800ccc6 Login Failed (for example, login without security password authentication, but with Security Password Authentication)
0x800ccc19 connection to the server timeout
0x800ccc1a cannot establish a connection with SSL
Winsock Error

0x800ccc40 network subsystem unavailable
0x800ccc41 Windows Sockets does not support this application
0x800ccc43 bad address.
0x800ccc44 Windows Sockets cannot be loaded
0x800ccc45 operation now in progress ..
SMTP Error

Invalid 0x800cc60's response
0x800ccc61 Unknown error code
0x800ccc62 received a syntax error
Invalid 0x800ccc63 syntax Parameter
0x800ccc64 command incomplete
0x800ccc65 incorrect command sequence
0x800ccc66 command incomplete
0x800ccc67 does not have this command
0x800ccc68 email address is locked or busy
0x800ccc69 cannot find the email address
0x800ccc6a Processing request Error
0x800ccc6b email box is not on this server
0x800ccc6c no space for storing emails
0x800ccc6d exceeds the upper limit of storage capacity
Invalid 0x800ccc6e email address
0x800ccc6f transaction error. This message may be returned because the server does not accept your email. Please contact your ISP.
0x800ccc78 is an unknown sender, or the reply-to address is incorrect, or identity authentication is required (SMTP authentication is required for Yahoo Mail ).
0x800ccc79 recipient rejected by the server (relay denied: the SMTP setting that most often occurs in Outlook Express is incorrect. Please use the SMTP server of the ISP that provides your connection service to send a mail ,)
0x800ccc7a no sender specified
0x800ccc7b no recipient specified
POP3 Error

0x800ccc90 An error occurred while logging on to the email server. Check whether you have the permission to use the server. Or: you do not need to log on with the security password authentication, but have set the security password authentication.
0x800ccc91 user name error or cannot be found
0x800ccc92 incorrect account and password
0x800ccc93 unable to explain the response
0x800ccc94 command required
0x800ccc95 server has no email
0x800ccc96 is not marked as download
0x800ccc97 Message ID out of range
NNTP Error

0x800ccca0: The news server responds to an error. You may not have the permission to use the server.
0x800ccca1 failed to read the news group
0x800ccca 2 requires that the server Mail List fails.
0x800cca3 unable to display list
Group cannot be enabled for 0x800ccca4
0x800ccca5 server does not have this group
0x800ccca6 email is not on the server
0x800ccca7 cannot find part title
0x800ccca8 cannot find email this article
0x800ccca9 cannot be published to the server
0x800cccaa cannot enable the next mail
0x800cccab cannot display date
0x800cccac cannot display title
0x800cccad cannot display the mime title
0x800cccae user name or password incorrect
Ras Error

0x800cccc2 dial-up network Not Installed
0x800cccc3 cannot find Dial-Up Network
0x800cccc4 dial-up network error
0x800cccc5 connectoid is broken or lost
0x800cccc6 error in dialing setting
IMAP Error

0x800cccd1 Logon Failed
0x800cccd2 message tagged
0x800cccd3 Invalid Response to request.
0x800cccd4 syntax error
0x800cccd5 is not an IMAP server
0x800cccd6 buffer has exceeded the upper limit
0x800cccd7 recovery Error
0x800cccd8 Incomplete Information
0x800cccd9 connection rejected
0x800cccda unknown response
0x800cccdb user ID changed
0x800cccdc user id command failed
0x800cccdd unexpected disconnect
0x800cccde Invalid server state
0x800cccdf cannot authenticate the client
Email scan Error

0x8004210a
(Or 0x800ccc19) installed with anti-virus software, and opened "scanned emails received" and "scanned emails sent"