SMTP Status Codes and Error Messages from Error 431 to 442


SMTP status code – 431 – The recipient’s mail server is experiencing a Disk Full condition
(also called SMTP Error 4.3.1)
SMTP Error 431 : The recipient’s mail server is
experiencing a Disk Full error condition, or an Out of
Memory (too many file handles) error condition (Microsoft

SMTP status code – 432 – The recipient’s Exchange Server incoming mail queue has been stopped
(also called SMTP Error 4.3.2)
SMTP Error 432 : This is an SMTP status response
specific to Microsoft Exchange Server. It indicates that the
recipient’s mail queue on their Exchange Server has been
stopped (frozen), probably while the Network Administrator
troubleshoots some problem.

SMTP status code – 441 – The recipient’s server is not responding
(also called SMTP Error 4.4.1)
SMTP Error 441 : This is an error emanating from your
server indicating that the recipient’s server is not
responding. Your server will automatically try again a
number of times – how many depends on how your server
has been configured.

SMTP status code – 442 – The connection was dropped during transmission.
(also called SMTP Error 4.4.2)
SMTP Error 442 : Your server started delivering the
message but the connection was broken during
transmission. This may be an unusual transient error –
however, if it keeps happening you should investigate
possible problems with your server’s network card, your
Internet routers, processes hogging the resources of your
server, and anything else which could result in a network
connection being broken.

Above are list of SMTP Errors Codes and Status Codes along with Error and Warning messages from Error 431 to 442 received while performing certain operation against mail server applications or related products.

What are SMTP Error Messages?
Simple Mail Transfer Protocol (SMTP) is an Internet standard for electronic mail (e-mail) transmission. SMTP protocol is used for sending e-mail messages between servers. Most e-mail systems that send mail over the Internet use SMTP to send messages from one server to another; the messages can then be retrieved with an e-mail client using either POP or IMAP.

In general, each SMTP error contains the following information:
• The SMTP Status Code or SMTP Error Codes or SMTP Reply Codes
• The message text. This text is usually returned with the Error code. Some messages employ word substitution, where the word substituted represents the system-replacement of a term more specific to the occurrence.
• An explanation of how the error may have occurred.

Hope this was helpful.

SQLServerF1 Team
Information about SMTP Error Codes or Status Codes and Error Messages on Windows, Linux Operating Systems.


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