If you received the following error message or bounce back this means that there is an unusual amount of emails originating from your address/IP. Explanation provided below and possible solutions are provided to clean up your account:
Error Message
---------------------------------------------------
host google.com or yahoo.com
SMTP error from remote mail server after end of data:
550 5.7.1 [VRCSR] Our system has detected an unusual amount of unsolicited email originating from your address.
Contact your service provider for support
---------------------------------------------------
Possible Cause:
1. Your account is sending mass email intentionally,
2. Your email account might have been compromised, thus sending unintended mass email/spam,
3. You have setup a lot of email forwarders to a single gmail or yahoo account,
4. Online contact forms are unprotected or compromised that resulting in your scripts sending mass email/spam,
Possible Solutions:
1. Stop mass mailing in your account. This will reset your email/IP reputation within 24 hours and will resolve itself.
2. Immediately change passwords for all your email address as well as cpanel, ftp and similar services. It is also recommended that you scan your local machines for possible viruses or malware that sends email spam.
3. Remove forwarders to any free email services such as gmail or yahoo. This will result in multiple sending and might label your email as spam even if its legitimate.
4. Secure your online contact forms by using SMTP authentication or authenticated email users instead of the unsecure mail function in php.
The email reputation usually resets after 24 hours but if the spamming or spam-like behaviour continues then this will just recur. It is also worth checking at your scripts such as wordpress, joomla, drupal and alike to see if everything is updated and hardened to avoid exploitation and hacking that will lead to more spamming.
If any of the above has been done and you continue to experience the bounce email error, please contact us with your domain and affected email so we can take a look and provide a proper solution.
