Managing Suppressions
Outbound Email Delivery may fail at various points in the delivery process and for various reasons:
- Mailboxes may reject email with hard or repetitively soft bounces. This may result in email recipients being suppressed by Email Delivery until the underlying causes of the bounces is resolved.
- Email Delivery may reject emails due to complaints, manual entry or list-unsubscribe requests.
- Transportation and Global Trade Management may block outbound emails not properly registered with Email Delivery or passing Sender Policy Framework (SPF) checks.
- Transportation and Global Trade Management may block outbound emails due to various mail quotas.
If email recipients report they are not receiving emails, a number of monitoring and configuration screens in Transportation and Global Trade Management can aid in determining the underlying cause and correcting the issue.
Monitoring Email Delivery Failures
-
Logging: The MailError log ID shows the From and To address of each failed email. By setting up an ad-hoc log that enables this logging, all such email can be tracked as they fail.
- Real-time Diagnostics: The Mail Failures screen shows summary information for failed emails. For each From/To address pairing that failed, you can monitor:
-
the number of emails failed due to Email Delivery recipient suppression
-
the number of emails failed due to other address issues
-
whether the sender has been correctly registered as a valid Email Delivery Mail Sender
-
whether Email Delivery is currently suppressing the recipient
-
- Historical Diagnostics: As part of Historical Metrics, the following metric types can be used to track mail suppression over the preceding hours, days and weeks:
- MAIL – FAILED shows a count of general mail failures due to addressing issues
- MAIL – SUPPRESSED sshows a count of mail failures due explicitly to Oracle Mail recipient suppression
Resolving Email Delivery Suppression
If emails are failing due to Email Delivery recipient suppression, the underlying cause of Email Delivery Suppression should be determined and resolved (which may be due to an aberrant failure like a hard bounce due to temporary communication issues) Once resolved, you can request Email Delivery remove the mail suppression by clicking Unsuppress on the Mail Failures screen. Note that while this will remove the suppression, the removal may be temporary if the underlying cause is not resolved. Email Delivery may simply suppress the recipient address again. If this happens, Transportation and Global Trade Management needs to work with Oracle Cloud Email Operations to determine the cause.
Incorrect SPF configuration can often lead to Email Delivery suppression. It’s important to correctly configure your SPF with respect to your e-mail domains and any downstream servers. Use the Mail Sender or Mail Validation screens to verify that your sender is properly configured for SPF verification.
Email Delivery suppression may also be due to excessive mail use. See the Mail Quota section below for guidelines on monitoring your overall, per content and per recipient email use.
Monitoring Transportation and Global Trade Management Email Blocking
Unless using a pre-authorized sender address for outbound emails, customers must register all from addresses to Email Delivery via the Mail Sender screen. The system will block sending of any email to a sender not successfully registered as a Mail Sender. These blocks can be monitored with MailError logging. In addition, the system can block outbound mail that fails SPF checks. This can avoid having Email Delivery suppress all recipients receiving email from an invalid sender and shift the responsibility for SPF validation to Transportation and Global Trade Management.
Resolving Transportation and Global Trade Management Email Blocking
If emails are being blocked by Transportation and Global Trade Management, make sure you have successfully registered your From addresses as valid mail senders on the Mail Sender screen.