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  3. ›AWS Transfer Family
  4. ›Update

Feature•Mar 25, 2026

AWS Transfer Family AS2 now supports receipts of MDNs asynchronously

AWS Transfer FamilyAWS · Migration

AWS Transfer Family now supports receiving Message Disposition Notifications (MDNs) asynchronously for messages sent to trading partners over Applicability Statement 2 (AS2). This enables you to migrate your AS2 workflows to Transfer Family while maintaining interoperability with your trading partners, regardless of their message processing times or network requirements.

Organizations across healthcare, life sciences, retail, manufacturing, and supply chain sectors depend on Transfer Family for secure AS2-based data exchange with trading partners and regulatory bodies. You can now send AS2 messages while requesting MDNs asynchronously over a separate TLS connection, ensuring compatibility with partner AS2 systems that have extended processing times or high latency. With this launch, Transfer Family supports both synchronous and asynchronous MDN requests, enabling you to migrate AS2 workflows to AWS without impacting your partner integrations.

This capability is available in the majority of AWS regions where AWS Transfer Family is offered. For the full list of supported regions, visit the AWS Capabilities tool in Builder Center. For detailed implementation guidance, see the Transfer Family user guide. To learn more, visit the AWS Transfer Family product page.

Read the original announcement↗

More from AWS Transfer Family

All AWS Transfer Family updates →
  1. AWS Transfer Family supports custom ports for public SFTP servers

    AWS Transfer Family now lets you configure custom ports on public SFTP servers and choose a communication mode for each port. You can support clients that require different ports or start SFTP connections differently on a single server.

    AWS Transfer Family•Feature•Oct 12, 2026
  2. AWS Transfer Family now supports custom CloudWatch log groups for managed workflows

    AWS Transfer Family now lets you choose a custom log group in Amazon CloudWatch Logs for managed workflow execution logs. You can organize workflow logs to monitor individual workflows separately or bring logs from related workflows together.

    AWS Transfer Family•Feature•Oct 1, 2026
  3. AWS Transfer Family now automatically approves SFTP connector quota increases up to 1,000

    AWS Transfer Family now automatically approves requests to increase your SFTP connector quota up to 1,000 connectors per AWS account in each AWS Region. You can add more connectors as your file transfer needs grow without waiting for manual approval.

    AWS Transfer Family•Feature•Sep 30, 2026
  4. AWS Transfer Family now supports downloading multiple files and folders in web apps

    AWS Transfer Family now lets web app users download multiple files and folders at once. End users can select any combination of files and folders and download them together in a single action.

    AWS Transfer Family•Feature•Sep 29, 2026
  5. AWS Transfer Family now supports source IP preservation for SFTP servers behind a Network Load Balancer (NLB)

    AWS Transfer Family now preserves the client's source IP address using Proxy Protocol v2 (PPv2) when you place a Network Load Balancer (NLB) in front of your SFTP server that uses a VPC-hosted endpoint.

    AWS Transfer Family•Feature•Sep 17, 2026