Error message is occuring while I mail to the group mail.


  • This is the mail system at host


    I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.


        554 5.7.1 Recipient address rejected: Unknown recipient

    Can I know how can I do to explain this problem. I cannot sent group email with attached file. Please help me.

    Best regards,

    Paing Soe Linn

    Friday, June 8, 2018 3:22 AM

All replies

  • Hi Paing Soe Linn,


    Our forum focus on a software called Lync server, based on your description, the problem is related to the Exchange server, so I moved this thread to the Exchange Server 2013 – General Discussion forum.

    Thanks for your understanding.

    Best Regards,
    Leon Lu

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    Monday, June 11, 2018 2:18 AM