If you are a Gmail user then while working on the mail based application you often meet up with some technical errors which affect your work and you may get irritated with these errors. 550 is one of the most common errors reported by users at the time of sending emails. 550 error means that there is some problem with the recipient server which makes it unable to deliver the mail.
As a result of this error, when the sender sends the mail to the receiver from the other servers, that mail i1111111tts bounced back with the error code and message.
Here are the symptoms of this error:
1. “Message sending failed”, “No mailbox by that name is currently available” or “No Such user here” etc. popup messages are displayed according to the reason.
2. Server to Server connection fails etc.
Following are the possible causes of this error to happen:
1. Wrong recipient address:
The email bounces back with the error message when the recipient address of that particular account to which sender is sending the mail is wrong. At times, a wrongly typed email address of the recipient can cause this email delivery failure. A missing alphabet can end up missing an email address.
It is also possible that an email address that once existed got deleted or removed from the recipient mail server. In such cases, the recipient server would be unable to deliver the mail to the receiver.
Even a misconfiguration or bug in the recipient server can cause the occurrence of the error.
2. Incorrect DNS settings for the domain:
Email error 550 can also occur at the time when the DNS settings for the recipient domain are not correct.
3. Email filters sets for the domain.
Some recipient mail accounts can have mail filters. A catchall address or forwarder that relay to a non-existing account can end up causing 550 errors.
Filtering for the incoming emails using email filters or anti-spam firewalls can end up bouncing emails from certain sender servers returning the 550 error message.
1. Always validate the recipient email address you’ve given in the email for any spelling mistakes or errors because many times the user does the alphabetical mistakes. If everything is fine at your end, confirm whether the email account actually exists.
2. Make sure that the DNS settings are correct otherwise if you notice DNS errors or missing MX records, then contact the recipient server support and get it fixed.
3. Check your outgoing firewalls and rules, if all good, contact recipient server support and get the email filters verified for any erroneous filters or rules that can be blocking the emails.