An error is received when sending an email message using a distribution list.
Symptoms When attempting to send an email message using a list of recipients, the error "Your email message was unable to be sent because your mail server rejected the message: 553 Sorry, too many recipients." is received with Symantec Email Proxy as the title.
Disabling Symantec Endpoint Protection does not resolve the error. The error is then displayed by the email client.
Your email provider may be blocking the message send as suspected Spam due to the number of recipients.
Symantec Endpoint Protection only passes the message to the mail server. It may be necessary to contact the mail provider to resolve this error or send to a smaller list of recipients.
Imported Document ID: TECH92353
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