Description: Invalid email address. What does this mean? This is a duplicate response for SMTP Error # 510. Please reference that error for similar documentation. Related Articles: SMTP Response 220 SMTP Error 431 SMTP Error 451 SMTP Error 504 SMTP Error 550
Description: A DNS error: the host server for the recipient’s domain name cannot be found. What does this mean? The email recipient’s email address (user@domain.com) is using a domain name that can not be found. How to fix SMTP Error 512? This is commonly due to misspelling in the recipient’s email address such as (user@domain.coom […]
Description: Address type is incorrect (possibly misspelled). What does this mean? Luckily, this response is extremely straightforward. The suggestion event states, “Possibly misspelled.” How to fix SMTP Error 513? Check for email address misspelling(s). Ensure that the email address still exists. SMTP Error 513 Examples Related Articles: SMTP Response 251 SMTP Error 442 SMTP Error […]
Description: Syntax error in parameters or arguments. What does this mean? This is similar to SMTP Error #500, although this is specific to the additional ‘parameters’ or options that are being used. How to fix SMTP Error 501? This is most commonly an issued with an incorrect/invalid email address, however can also be due to […]
Description: Command not implemented. What does this mean? The parameters or options being used when sending mail from your local server are recognized, however disabled in it’s configuration. How to fix SMTP Error 502? Diagnose the exact parameters being used for sending the email message(s) when the error occurred. Review your MTA’s configuration to attempt […]
Description: A routing error. What does this mean? Also, like most other Microsoft Errors, this message leaves a lot to question. No official description is provided for this, however see the fix suggestion for possible further diagnosis. How to fix SMTP Error 449? Microsoft’s official suggestion for diagnosing and attempt to resolve the issue, is […]
Description: Requested mail action not taken: mailbox unavailable (e.g., mailbox not found, no access, or command rejected for policy reasons). What does this mean? Generally errors ending with 0 are going to be the least specific. This error is no exception. This has many meanings or specific possibilities. The most common possibilities include: The recipient […]
Description: Requested action aborted: error in processing. What does this mean? When attempting to process the message, the receiving mailserver’s rules prevented it from processing it for delivery. Rules such as SPF verification can create this error. How to fix SMTP Error 451? Depending on the exact message given, it’s most likely related to the […]
Description: Requested action not taken: insufficient system storage. What does this mean? Your mail server is ‘overloaded’. This could be caused by too many messages attempting to send at once, the server being out of memory or storage space. How to fix SMTP Error 452? Review your current mail queue and log to ensure adequate […]
Description: Server unable to accommodate parameters. What does this mean? If for some reason the server is temporarily unable to accomodate one or more of the parameters associated with a MAIL FROM or RCPT TO command, and if the definition of the specific parameter does not mandate the use of another code, it should return […]