Mail delivery failed: returning message to sender

[Mail Delivery System]

This message was created automatically by mail delivery software (Exim).

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  jmace at flash.net
    SMTP error from remote mailer after RCPT TO:<jmace at flash.net>:
    host vm6-ext.prodigy.net [207.115.63.80]: 550 5.1.1 <jmace at flash.net>... Addressee unknown
  ann1112 at juno.com
    SMTP error from remote mailer after RCPT TO:<ann1112 at juno.com>:
    host mx.boston.juno.com [64.136.25.17]: 550 ann1112 at juno.com Account Inactive
  jmace at hushmail.com
    SMTP error from remote mailer after RCPT TO:<jmace at hushmail.com>:
    host smtp.hushmail.com [64.40.111.34]: 550 <jmace at hushmail.com>:
    User unknown
  jahangiri at att.net
    SMTP error from remote mailer after RCPT TO:<jahangiri at att.net>:
    host gateway1.att.net [204.127.134.23]: 550 Invalid recipient:
    <jahangiri at att.net>
  kat11182 at att.net
    SMTP error from remote mailer after RCPT TO:<kat11182 at att.net>:
    host gateway1.att.net [204.127.134.23]: 550 Invalid recipient:
    <kat11182 at att.net>
  jmace86965 at att.net
    SMTP error from remote mailer after RCPT TO:<jmace86965 at att.net>:
    host gateway1.att.net [204.127.134.23]: 550 Invalid recipient:
    <jmace86965 at att.net>
  jmace999 at att.net
    SMTP error from remote mailer after RCPT TO:<jmace999 at att.net>:
    host gateway1.att.net [204.127.134.23]: 550 Invalid recipient:
    <jmace999 at att.net>
  jmace77181 at att.net
    SMTP error from remote mailer after RCPT TO:<jmace77181 at att.net>:
    host gateway1.att.net [204.127.134.23]: 550 Invalid recipient:
    <jmace77181 at att.net>
  kat1118 at att.net
    SMTP error from remote mailer after RCPT TO:<kat1118 at att.net>:
    host gateway1.att.net [204.127.134.23]: 550 Invalid recipient:
    <kat1118 at att.net>
  kat1118630 at att.net
    SMTP error from remote mailer after RCPT TO:<kat1118630 at att.net>:
    host gateway1.att.net [204.127.134.23]: 550 Invalid recipient:
    <kat1118630 at att.net>
  laairman at att.net
    SMTP error from remote mailer after RCPT TO:<laairman at att.net>:
    host gateway1.att.net [204.127.134.23]: 550 Invalid recipient:
    <laairman at att.net>
  kat1118150 at att.net
    SMTP error from remote mailer after RCPT TO:<kat1118150 at att.net>:
    host gateway1.att.net [204.127.134.23]: 550 Invalid recipient:
    <kat1118150 at att.net>

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