If you're receiving this error, it means we have detected abuse originating from your email account.

The 550 5.7.1 [SS] error indicates that the subject line in this/these message(s) contained one or multiple spam-like keywords commonly used on abusive or unsolicited email. The 5.xx nature of the response code indicates that this was a permanent failure and your message(s) were returned and not delivered due to the high probability of spam content. Common keywords include pharmaceutical terms and/or prescription medication names, lewd or obscene references, and other firm indicators or unsolicited or unwanted message traffic. 

How can I unblock my account as an end user?

Secure your account against compromise by performing the following:

• Change your password. Ensure your new password has a minimum length of eight characters and uses a mixture of upper and lower case letters, numbers, and special characters.
• Verify that your operating system is running with the latest security updates.
• Update your anti-virus software and conduct a full scan of your system to ensure that a spammer has not installed spam-sending malware on your computer.

If these steps do not resolve the problem, please file a support request with your web hosting provider.  

How can I unblock an end user account as a service provider?

As a first step, verify that the account that is blocked is not compromised and is not sending spam. If the account is compromised, the account has to be secured.

If this is a false positive, please raise a support ticket by writing to support@mailchannels.com with the following details

1) Sender email address

2) Subject

3) Recipient email address

4) Date & Time