---
schema_version: "1"
id: 05c08cd57451913c90179d9890f65c1959debb12f5ad1f513c6c2688257ef6dd
title: Bounces
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/mktg/264-0-0/mc_as_bounces.md
canonical_url: https://help.salesforce.com/s/articleView?id=mktg.mc_as_bounces.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 832c7c45bbd8c78200ee5d95c61ff632908eec8378065b70d182c9d51e3a2765
description: The bounce event extract file shows all the hard and soft bounces that occurred in a specific date range. The events in this report relate to all subscribers for a particular send.
products:
  - Marketing
  - Marketing Cloud Engagement
release: "264"
---
# Bounces

The bounce event extract file shows all the hard and soft bounces that occurred in a specific date range. The events in this report relate to all subscribers for a particular send.

## Output Types

- CSV
- TAB
- XML

## Columns

<table class="slds-table slds-table_bordered slds-max-medium-table_stacked slds-m-bottom_small " summary="Attributes">
        <caption>Attributes</caption>
        <colgroup>
          <col style="width:20%">
          <col style="width:20%">
          <col style="width:20%">
          <col style="width:20%">
          <col style="width:20%">
        </colgroup>
        <thead class="slds-text-title_caps ">
          <tr class="">
            <th scope="col" class="slds-cell-wrap" style="vertical-align:top;" id="d27878e69">Name</th>
            <th scope="col" class="slds-cell-wrap" style="vertical-align:top;" id="d27878e72">Description</th>
            <th scope="col" class="slds-cell-wrap" style="vertical-align:top;" id="d27878e75">Possible Values</th>
            <th scope="col" class="slds-cell-wrap" style="vertical-align:top;" id="d27878e78">Data Type</th>
            <th scope="col" class="slds-cell-wrap" style="vertical-align:top;" id="d27878e81">Character Length</th>
          </tr>
        </thead>
        <tbody>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">ClientID</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">The system account identifier associated with the attribute set</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">-2^63 (-9,223,372,036,854,775,808) to 2^63-1 (9,223,372,036,854,775,807)</td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">Numeric</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">Maximum length - big integer</td>

          </tr>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">SendID or JobID</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">Identifier associated with an email send</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">&nbsp;</td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">Number</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">Maximum length - big integer</td>

          </tr>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">SubscriberKey</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">Customer-specified subscriber unique identifier associated with attribute set. By
              default, the value is the same as EmailAddress.</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">&nbsp;</td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">String</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">254</td>

          </tr>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">EmailAddress</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">Subscriber email address identifier associated with attribute set</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">&nbsp;</td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">String</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">254</td>

          </tr>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">SubscriberID</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">System-generated subscriber unique identifier associated with attribute set.
              SubscriberID relates to the Subscribers file SubscriberID column.</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">&nbsp;</td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">Number</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">Maximum length - big integer</td>

          </tr>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">ListID</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">Identifier of the list ID associated with the subscriber in the send</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">&nbsp;</td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">Number</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">Maximum length - big integer</td>

          </tr>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">EventDate</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">Date the bounce event occurred</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">&nbsp;</td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">Datetime</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">&nbsp;</td>

          </tr>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">EventType</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">Identifies event type</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">Bounce</td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">String</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">6</td>

          </tr>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">BounceCategory</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">Identifies bounce type</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">
              <ul>
                <li>Block bounce</li>

                <li>Hard bounce</li>

                <li>Soft bounce</li>

                <li>Unknown bounce</li>

                <li>Technical or other bounce</li>

              </ul>
            </td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">String</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">50</td>

          </tr>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">SMTPCode</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">SMTP code related to the bounce</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">&nbsp;</td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">Numeric</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">Small integer</td>

          </tr>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">BounceReason</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">Detailed reason for bounce provided by external ISP or MTA</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">See Bounce Reason Table</td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">String</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">8000</td>

          </tr>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">BatchID</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">Identifies batch associated with a triggered email sent event - defaults to 0 for a
              marketing list send</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">
              <p>Sample values:</p>
              <p>SendID,EventDate,SubscriberKey,EmailAddress,TriggeredSendExternalKey,BatchId</p>
              <p>1234,1/2/2024,"example@example.com","example@example.com","Coupon",1</p>
              <p>1234,1/2/2024,"example@example.com","example@example.com","Coupon",2</p>
              <p style="margin-bottom:0;">1238,1/10/2024,"example@example.com","example@example.com","Coupon",1</p>
            </td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">String</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">100</td>

          </tr>
          <tr class="">
            <td data-label="Name" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e69 ">TriggeredSendExternalKey</td>

            <td data-label="Description" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e72 ">External key associated to a triggered send definition if the bounce resulted from a
              triggered send request</td>

            <td data-label="Possible Values" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e75 ">&nbsp;</td>

            <td data-label="Data Type" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e78 ">String</td>

            <td data-label="Character Length" class="slds-cell-wrap" style="vertical-align:top;" headers="d27878e81 ">100</td>

          </tr>
        </tbody>
      </table>

## Bounce Reason

Bounce Reason  
| BounceSubcategoryText | BounceSubcategoryDescription |
| --- | --- |
| Authentication | Message lacks required authentication |
| Bad Address Syntax | Email address in invalid |
| Complaints | Your email is blocked due to complaints |
| Content | Message was filtered due to content |
| Data Format Error | Email is rejected due to formatting or line length errors |
| Domain Unknown | Recipient domain doesn't exist |
| High Unknown Address Pct. | Email is blocked due to the high quantity or percentage of unknown or inactive addresses on your list |
| Inactive Account | Address is temporarily unavailable |
| Mailbox Full | Recipient's mailbox is full or has exceeded storage allocation |
| Network Error | Connection lost or timed out during delivery |
| Other | Failed due to temporary failure or indecipherable bounce message |
| Other | This address does not accept mail |
| Other | This email is blocked by recipient |
| Other | Mailbox temporarily unavailable |
| Server Too Busy | Receiving email server is temporarily overwhelmed with delivery attempts, from you and other senders |
| Spamblocked | The remote mail server rejected this message due to characteristics of spam |
| Temporary Domain Failure | Receiving domain temporarily unavailable |
| Unknown | Response from email provider that doesn’t match a BounceSubcategoryText value. This response can contain non-alphanumeric characters. |
| URL Block | Emails containing your URLs are blocked |
| User Unknown | Address is non-existent at the domain |