If you are a Charter Internet access residential customer and you receive the following error message when trying to send emails: "421 Connection Refused - Customer has exceeded the maximum number of messages allowed per hour", it means your account SMTP access was temporarily blocked. The following restrictions apply when emailing from a Charter connection:
- Charter email send limit - maximum 50 recipients / emails per hour
- Charter other SMTP limits - max 10mb per message
- Charter email-outbound policy - Residential HSI Acceptable Use Policy - Charter Communications
- Charter SMTP restriction expiry method - wait an hour to send additional emails or brake up the recipients number into smaller groups.
