This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of its
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jbuxcel(a)worldcom.ch
host smtp2.worldcom.ch [212.74.176.17]
SMTP error from remote mail server after RCPT TO:<jbuxcel(a)worldcom.ch>:
591 jbuxcel(a)worldcom.ch your computer's IP address [172.105.22.147] is blacklisted by IP worldcom. No mail will be accepted, use SMTP server of your ISP