A 550 Spam error is a catchall error message that is relayed back to the user within a bounced message to alert them about why an outgoing message was bounced. The specific error message “550: High probability of spam” occurs when you attempt to send an outgoing email to another mail server and it rejects it outright due to classifying your message as spam.
While it is frustrating that your mail can automatically be classified as spam, this is usually done as a safety precaution by mail servers in order to keep users safe from potential hazards that could slip through a spam filter. While there are ways of preventing this bounce error from occurring on your end, it is generally impossible to completely avoid these types of bounces from occurring due to the nature of not knowing how spam filters of other mail servers are configured. Let’s go over some ways of preventing this error from occurring as well as some troubleshooting methods you can perform to narrow it down.
Common Solutions To This Error
While there isn’t a guaranteed way of fixing this issue for your inbox, there are a few things you should try before moving on to other possible solutions.