X.1.7 Email Bounce Error [Bad sender’s mailbox address syntax]
4.1.7 Email Bounce Error Reason Sender’s Address Is Written Incorrectly: Delayed Message The email message has not yet been delivered because the sending address is not a valid email address. How to fix? Review the sender’s email address to identify any misspellings or missing letters. In the settings or options of the sender’s email program […]