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Charter Postmaster Services

Charter has developed various policies and procedures to protect our customers from abuse.

If you were directed to this site because of a specific error received when trying to send an e–mail please find the error listed below for additional information and troubleshooting tips to resolve the issue

General Information

Determining Spam

Charter uses several different methods to protect users from spam and other messaging abuse. We allow members of the community to report messages as spam, and those reports may cause a message to filter as spam.

Handling Spam

Messages determined to be Spam will be delivered your Junk Mail folder.  If you have activated your junk mail folder in Charter.net  Email.   To activate your Junk Mail folder: 

  1. Login to charter.net Email
  2. Click Preferences
  3. Click on your email address

Preferences

  1. Click Junk Mail protection

junk mail protection

  1. Choose your option and click save or close

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Rate Limiting

Rate limiting is an anti-abuse network protection method. Charter customers are limited to sending a set number of messages per hour. Additionally, there are a set number of recipients per message allowed. This policy is standard industry practice. The rate limit threshold is a dynamic number configurable by system administrators which has been set in accordance with standard industry practice. Rate limiting ensures mail system stability and usability for all Charter customers

Real-time Blacklist (RBL)

RBL Stands for "Real-time Blacklist". Charter uses multiple RBLs. One RBL is intended to keep track of Charter Customers that are known to have been spammers. These customers have violated the Terms of Service. Another RBL is leveraged to stop inbound mail from spammers at the network layer whose IP blocks are known to be owned by spammers. An IP that is on an RBL will not be able to send email to the Charter mail complex

Virus Infected Email

Since most virus infected email is spam, our anti-spam system will drop and not process delivery of those emails.

Virus infected emails that are not flagged as spam will be delivered to their intended recipients.

Charter subscribers concerned about being vulnerable to virus infected emails should protect their computer with the Charter Security Suite™, which offers the latest in virus prevention and protection technology. The Charter Security Suite™ is available to all Charter Internet subscribers at no additional charge. Click here for more information and to download the Charter Security Suite™.

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Error Codes & Troubleshooting

452 [FROM EMAIL ADDRESS] send quota exceeded: try again later E2210

Possible Issue: The sender has exceeded the maximum number of message allowed per hour.

Troubleshooting: Charter customers are limited to sending a set number of messages per hour. Additionally, there are a set number of recipients per message allowed. This policy is standard industry practice. The rate limit threshold is a dynamic number configurable by system administrators which has been set in accordance with standard industry practice. Rate limiting ensures mail system stability and usability for all Charter customers.

452 [FROM EMAIL ADDRESS] come back later E1520

Possible Issue: The sender's mail client has exceeded the number of messages per session.

Troubleshooting: Wait at least one hour from time of last send before resuming the process of sending e-mail from the mail client.

503 Sender Already specified - Too many invalid email addresses

Possible Issue: There is a limit on the number of invalid e-mail addresses the sender can attempt to send e-mail messages to.

Troubleshooting: Only send e-mail messages to valid e-mail accounts.

552 Message size exceeds allowed maximum message size

Possible Issue: The sender is attempting to send an e-mail with an attachment that exceeds the allowed maximum message size.

Troubleshooting: 10 Megabytes is the maximum allowable single message size for residential customers.

553 [FROM_DOMAIN] does not exist E2110

Possible Issue: The sender is attempting to send e-mail messages from a domain that does not exist.

Troubleshooting: Verify the sender's domain is a valid domain.

553 [TO DOMAIN] does not exist E2120

Possible Issue: The domain the sender is attempting to send e-mail messages to does not exist.

Troubleshooting: Verify the recipient's domain is a valid domain.

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