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Over the past few weeks, several of our readers have reported bug 5.5.0. When emails are rejected for the 550 SMTP error (also known as SMTP 5.5.0 error), it usually means that the message cannot be delivered because the mailbox is no longer available. This is almost always a new problem with the receiving mail server and never a problem with my sending client.
Message Not Delivered: The Subject Of Your Mail Server Is Unknown
MessageThese could not be delivered easily because the sender’s mail server had an unknown design problem and was unable to properly route your current message.
Check the recipient’s email address to make sure it is correct and try resending the frequency.
If that doesn’t work, see if you’re contacting the recipient (s) through different email addresses or otherwise.
5.5 Official 7: Definition
What does this mean 5.1 1 bad destination email address reject?
Error code 5.1. 1 is caused by issues with each MX resource record for the recipient domain. For example, the MX file might point to an old mailer server, or the MX record might be ambiguous due to a change in owner configuration.
[RFC3463] (Standards Track) from the Internet Engineering Task Force (IETF). Determining the characteristics of codes starting in combination with 5.X.X:
A permanent error is an error that is unlikely to be resolved by returning the message in its current form. Change anything to the point where you need to formulate a goal for successful implementation.
[RFC3463] (Standards Track) based on the Internet Engineering Force (IETF) role definition for codes defined in X.5. Was 0:
Something is wrong with their protocol, which is necessary to pass the idea to the next transition, and each of our problems cannot be expressed well, as well as about whoother summary codes provided.
Your Web Browser, Explorer) (The Internet literally looks a little retro. Try an Internet connection for the best Zoho Desk experience.
Error / Status Code
Address 5.0.0 does not exist
Invalid email id doesn’t exist either
5.1.0 Other conditions overcome
Failed to deliver this message to the specified email address.
5.1.1 Invalid target mailbox address
Specifying a postal address or domain mailbox not (all ‘@’) after.
5.1.2 Invalid system address of the target computer
Address does not exist or cannot receive emails
5.1.3 Bad Stations Mailbox Address Syntax
Invalid or corrupted using unique email address
5.1.4 Undefined target mailbox addresses
Check the spelling of the address information resubmit it
5.1.5 Handle invalid target mailbox
The email address may be invalid or contain spelling errors.
Mailbox 5.1.6 can be moved
The mailbox will be moved to the new purchase location
5.1. Incorrect sender mailbox address syntax
Sender street is syntactically incorrect
5.1.8 Invalid system address of the sender computer
The sender system in the address does not exist or cannot be accepted.
What is 5. 1 0 address rejected?
1. Email error 550 5.1. 0 address rejected. This error message means that the primary recipient server is not accepting emails from you.
5.2.0 Other or undefined postal status
This error is usually returned for which it probably has a class (e.g. 1xx, 2xx, 3xx, 4xx, 5xx).
5.2.1 Mailbox is disabled, messages are not received
What does it mean Recipient address rejected?
Recipient address ended your message: This is an error generated by the spam filter currently in use on the recipient’s domain where your message was found and marked as spam. You will need to verify the recipient to add yourself to the whitelist.
Mandatory mail forwarding needs some changes
5.2.2 Mailbox Full
Try increasing the capacity of your email inbox
5.2.3 Length of the exceeded messagelimits the desktop.
Your email has reached its size limit. Delete too much text.
5.2.4 Issue with mailing list expansion
A mailbox stores the specific email address you send emails to, or emails that have a problem storing those email addresses.
5.3.0 System status is different or not detected by email
Mail is usually accepted
5.3.1 Complete Messaging Technology
Customer email cannot receive email
5.3.2 System does not record any network messages
You must add the webmail address to your administrator as it will be blocked.
5.3.3 The system is incompatible with the selected features
5.3.4 The message is too large due to the system
Message character exceeded limit
5.4.0 Other or undefined navigation or network status
Mail routing accepted status is not actually available
5.4.1 No response from host
Server receiver configuration problem. You can redistribute it as soon as the problem with the recipient is resolved
5.4.2 Bad connection
Unable to connect or delayed
5.4.3 Routing Web Server Failure
The error is generated by the sender’s server. You must contact the respective Internet Service Provider / ESP.
5.4. Routing not possible
If the specified email address or host ID is not valid.
5.4.5 Network congestion
Multiple when connecting separate channels.
5.4.6 Routing Trap Detected
After sending a message to the same PMTA.
5.4.7 Delivery time expired
Mail is queued for 2-3 days, after which it is deleted by current messages
5 above. 5.0 Other or undefined status method
A log error occurred even while delivering an item E-mails that may have been expressed by a different status code.
Invalid sequence or unsupported reception when sending emails
5.5.2 Error syntax
The command could not be interpreted due to incorrect syntax or not recognized.
5.5.3 Too many recipients
The number of recipients is even greater than the number of recipients that only deliver the protocol
5.5.4 Invalid Arguments
Command inconsistencies were out of scope or unknown functionality was available
5.5.5 Invalid protocol version
A protocol design mismatch that cannot be answered immediately.
5.6.0 Other media error or possibly not detected
There is a problem with the content of all messages that could not be delivered.
5.6.1 Media not supported
Media is not only supported by the protocol or system that can compose an email.
5.6. Second, conversion is required and not allowed
The message must be changed before shipping / delivery, otherwise the item will not be delivered.
5.6.3 Change required but not supported
The message must be changed in order for transmission, although sometimes this is not possible.
5.6.4 Lossy conversion done
This is a warning that the sender may be lost when converting numbers.
5.6.5 Conversion failed
Message modification error
5.7.0 Other or undefined protection status
An error occurred while validating the certificate, which can be expressed by different status codes.
5.7.1 Unauthorized Delivery, Content Rejected
Authentication failed because email was not sent.
5.7.2 Extending the Denied Mailing List
Sending e-mail to a specific recipient is not always allowed.
5.7.3 Safe conversion routines required, but not possible
The transformation was very important for sending emails securely, which is possibly not possible.
5.7.4 Security Features Probably Not Supported
End of delivery authentication is not supported.
5.7. Cryptographic 5 different errors
The message could not be decrypted because the key was incorrect and invalid.
5.7.6 Supported Cryptographic Algorithm
Unable – The message is decrypted because the algorithm was probably not supported.
5.7.7 Message Errors
Health message literally corrupted or altered