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451 qq temporary problem (#4.3.0)

  • 1.  451 qq temporary problem (#4.3.0)

    Posted Aug 04, 2015 02:42 AM

    Hello,

    I have a user who complaint that his recipient unable to receive his emais. I have checked audit log in symantec mail gateway and it show "451 qq temporary problem (#4.3.0)". Any idea?

    We running on Exchange 2010. The user is using Outlook client to send the emails.