---
article_id: KB0392937
article_type: Support Note
component_ids:
  - SBN-AN-SCC
  - SBN-AN-TX-POA
component_descriptions:
  - SAP Business Network for Procurement & Supply Chain > SAP Ariba Supply Chain Collaboration
  - SAP Business Network for Procurement & Supply Chain > Transaction Documents > Transaction (Purchase Orders, Ship Notices & Goods Receipts)
products:
  - SAP Business Network for Procurement and SAP Business Network for Supply Chain
personas:
  - Supplier
language: en
created: 2026-03-19
updated: 2026-03-23
source: Knowledge Base
url: https://support.ariba.com/item/view/KB0392937
connect_url: https://support.ariba.com/item/view/KB0392937?min=1
sap_for_me_url: https://me.sap.com/notes/KB0392937
---

# Why is my Purchase Order marked as Failed with Error: "FE-30: Cannot deliver email: undeliverable"?

## Symptom

My purchase order (PO) was marked as **Failed** on SAP Business Network.

When checking the **History** tab of my purchase order, I see the error: PO-11: Cannot deliver order. Terminal error code for PO status: FE-30: Cannot deliver email: could not be delivered.

## Cause

This error occurs when the email address in the order routing or in the order correspondent section is not a valid email address.

The other possibility is that your organization mail server is not accepting the email messages sent by SAP Business Network.

## Resolution

To resolve this error, verify that the email settings match the below requirements:

- Your mail server has the domain **@ansmtp.ariba.com** added to the allow list.
- All email addresses configured under **Electronic Order Routing** are correct and active. If you have a **Custom Order Routing** configured for specific customers, check the email addresses listed there as well.
- If the PO has any attachments, check with your internal IT department whether the file extensions are allowed by your mail server.

## See Also

Once the cause of the failure is resolved, you can [resend the failed orders](https://support.ariba.com/Item/view/144944_en).

For further information about the routing options available on SAP Business Network, see *[Configuring Electronic Order Routing](https://help.sap.com/docs/business-network-for-trading-partners/configuring-document-routing/configuring-electronic-order-routing?locale=en-US&version=LATEST#overriding-order-routing-for-a-customer)* and *[Overriding Order Routing for a Customer](https://help.sap.com/docs/business-network-for-trading-partners/configuring-document-routing/configuring-electronic-order-routing#overriding-order-routing-for-a-customer).*

For a list of common similar errors and their resolutions, see [Purchase orders are failing to reach the supplier email, but can be seen in the supplier's Workbench](https://support.ariba.com/item/view/KB0404683).