Fix email delivery issues for error lawmaking 5.7.124 in Exchange Online

  • Article
  • 3 minutes to read

It's frustrating when you lot get an error afterwards sending an email message. This topic describes what the remedies if you run into status code 550 v.vii.124 or five.7.124 in a non-delivery written report.

Notation

Non-delivery report is also known as an NDR, bounce message, delivery condition notification, or DSN.

You'll see this automated notification when the sender isn't specified in the grouping'due south immune senders list (directly or as a member of a group). Depending how the grouping is configured, even the group's owner might demand to be in the group'due south allowed senders list in guild to send messages to the group.

Icon Message Icon Message
Email user icon. I got this bounce bulletin. How practice I fix it? Email admin icon I'chiliad the group owner or electronic mail admin. How do I fix this effect?

I got this bounce message. How practice I prepare it?

Typically, members of a group can transport messages to the grouping. If the group is in your Substitution Online organization, y'all tin can effort to bring together the grouping in Outlook or Outlook on the spider web (formerly known as Outlook Web App). For instructions, meet Join a group in Outlook.

You might have to look for the group's owner to approve your asking to join the group before you can successfully send messages to it. If the group isn't in your organization, or if the grouping doesn't let requests to join, then you'll need to inquire the group owner to add you to the allowed senders listing. You lot'll find instructions for finding the group owner in the NDR.

I'g the grouping owner or email admin. How do I fix this issue?

The two methods that will allow the sender to send letters to the group are described in the following sections.

To open the Exchange admin center (EAC), run into Exchange admin center in Exchange Online.

Method 1: Add the sender to the group's existing immune senders list

New EAC

  1. Go to Recipients > Groups.

  2. Click the Distribution list tab.

  3. Select a group from the list and click information technology. The grouping properties screen appears.

    The screen displaying properties of the chosen distribution list group.

  4. Click the Settings tab.

  5. Under Delivery management, click Edit commitment direction. The Delivery direction screen appears.

  6. Under Sender options, choose the option Only allow messages from people inside my organization.

    The Delivery management screen on which specific internal members of the organization are chosen as senders.

  7. Nether Specified senders, click on the text box. The listing of senders is displayed.

    The screen on which a chosen sender is added to the group.

    Choose senders from the listing. The called sender's name is displayed below the text box.

    The screen on senders are set as group members.

  8. Click Save changes.

Classic EAC

  1. In the Classic EAC, become to Recipients > Groups > select the group from the list, and then click Edit Edit icon..

  2. In the grouping properties dialog box that opens, go to Commitment direction and so click Add Add icon..

Add an email address to the allowed senders list.

  1. In the Select Allowed Senders dialog box that opens, select the sender or a group that the sender is a member of.

  2. Add the sender or the sender'south group to the list of allowed senders.

  3. When you lot're finished, click OK, and click Save.

Note

To add an external sender to a grouping's allowed senders list, you must first create a mail contact or a mail service user to represent the external sender in your organization.

Method 2: Permit all internal and external senders to send letters to this group

If you decide that you don't need to restrict the message senders to this group, you can remove the restrictions and then anyone can send messages to this group:

New EAC

  1. Go to Recipients > Groups.

  2. Click the Distribution listing tab.

  3. Select a group from the listing and click it. The group backdrop screen appears.

    The screen displaying properties of the chosen distribution list group.

  4. Click the Settings tab.

  5. Under Delivery management, click Edit delivery management. The Commitment management screen appears.

  6. Nether Sender options, cull Allow messages from people within and exterior my system.

    The screen on which the user chooses the option to allow internal and external members to be set as senders.

  7. Click Save changes.

Classic EAC

  1. In the EAC, go to Recipients > Groups > select the grouping from the list, and and so click Edit Edit icon..

  2. In the group properties dialog box that opens, go to Delivery direction.

  3. In the Distribution Group box, select Delivery direction and configure the following settings:

    • Remove any entries in the allowed senders list by selecting one entry, pressing CTRL + A to select all entries, then clicking Remove Remove icon..

      Removing allowed senders from a distribution list.

    • Select Senders inside and outside of my organization.

  4. When y'all're finished, click Save.

More information virtually groups

Groups with more than v,000 members have the following restrictions automatically applied to them:

  • Senders to the group must exist members of the group.
  • Letters sent to the group require the approval of a moderator. To configure moderation for a group, come across Configure moderated recipients in Commutation Online.
  • Large messages can't be sent to the group. However, senders of large messages volition receive a dissimilar NDR. For more information almost large messages, run across Distribution group limits.

Yet need aid with error lawmaking 550 5.7.124?

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See also

Email non-delivery reports in Exchange Online

Create and manage distribution groups in Substitution Online.