Users can receive from a specific outside email address but cannot send to it from outlook. They can send successfuly from OWA and iphone to that specific address.


  • Users can receive from a specific outside email address but cannot send to it from outlook.

    They can send successfully from OWA and iphone to that specific address.

    Fails in Outlook 2003, 2007,2013.

    We are using exchange2010.

    The following recipient(s) cannot be reached:

          '' on 7/24/2013 12:01 PM

                You do not have permission to send to this recipient.  For assistance, contact your system administrator.

                < #5.7.1 smtp;550 5.7.1 ip>

    Wednesday, July 24, 2013 3:47 AM

All replies

  • Hi ,

    Thank you for posting your issue in the forum.

    I am trying to involve someone familiar with this topic to further look at this issue. There might be some time delay. Appreciate your patience.

    Thank you for your understanding and support.

    Best Regards,

    Andy Qi

    Andy Qi
    TechNet Community Support

    Friday, July 26, 2013 9:23 AM
  • Hi,

    Regarding this problem I have, do you recommend anybody outside of this forum that could solve it for me. Obviously I don't expect it to be a free service.



    Thursday, August 8, 2013 1:37 AM
  • Hi,

    Based on my experience, the error code 550 5.7.1 means that the sender does not have the permission to send messages to this recipient.

    To troubleshoot this issue, I appreciate you to help me answering the following questions first:

    1. How many users are affected by this issue?
    2. Could we always reproduce this issue if we send emails to other mailboxes in the same domain?
    3. What kind of the Outlook profile do your users use? Exchange MAPI profile or POP3/SMTP and IMAP/SMTP?

    Since the email could be delivered in OWA and iPhone, your Outlook client users might use different method and SMTP server to deliver the message. So we suggest you to check your mail flow from the Outlook client to the recipient, see if there is any incorrect permission setting blocked the message.

    Here are some articles talking about the NDR and the error code in NDR messages, hope they could be useful:

    Delivery status notifications in Exchange Server and in Small Business Server

    Understanding DSNs and NDRs

    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

    Monday, October 14, 2013 10:22 AM
  • Hello Aj,

    Quesiton : Are they replying to old emails or the new emails.

    What happens if we create a new profile and check the Outlook on Online Mode.

    Are the recipients Internal to the Domain or external to the domain ?

    can you give us an output of get-receiveconnector | fl



    Naveen V Microsoft Forum Specialist

    Tuesday, October 22, 2013 6:12 AM