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Re: Why is this valid?

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  • Victor Duchovni
    ... The punctuation characters and
    Message 1 of 7 , Jun 29, 2007
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      On Fri, Jun 29, 2007 at 04:30:28PM +0000, Duane Hill wrote:

      > >Can someone share with me why this email address:
      > >
      > > Yes!It'sDollarBlvd@...
      > >
      > >is valid? I didn't think the exclamation and single quote were allowed.
      > >This has been causing some grief in my attempts to populate some info into
      > >a MySQL table.
      > Sorry. I didn't explain in more detail. Why is the email address above
      > valid as the mail from:
      > [d.hill@duane ~]$ telnet 25
      > Trying
      > Connected to smtpgate.example.com.
      > Escape character is '^]'.
      > 220 smtpgate.example.com NO UCE ESMTP
      > helo sprimgntiononly.com
      > 250 smtpgate.example.com
      > mail from: <Yes!It'sDollarBlvd@...>
      > 250 2.1.0 Ok

      The punctuation characters <!> and <'> are valid in email addresses,
      both in message headers and in the envelope sender address.


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