How to solve return-path issues when sending from multiple domains in Google Workspace?

When sending from multiple domains in Google Workspace, the primary email address is typically used as the return-path, which cannot be customized directly within Google Workspace. This behavior can lead to deliverability issues if not properly managed. While one expert suggests the default setup is acceptable, various strategies are recommended to mitigate potential problems. These include configuring Gmail to send through the SMTP of the other domain, using an SMTP relay service for more control over the return-path, setting up DKIM signing for all sending domains, implementing a DMARC policy, using subdomains, and monitoring deliverability via Google Postmaster Tools. Ensuring SPF records authorize all sending sources, especially Google's servers, is critical. For larger organizations, dedicated IP addresses are suggested. Furthermore, warming up new domains and setting up DMARC reporting are important for maintaining a positive sender reputation. The Return-Path (Envelope From) is defined as the destination for bounce messages, highlighting the importance of SPF alignment when it differs from the From domain. Tools like MXToolbox can help verify SPF record configuration.

When sending from multiple domains in Google Workspace, the primary email address is typically used as the return-path, which can cause deliverability issues if not properly configured. Customization of the return-path within Google Workspace is generally not possible without using workarounds. Several strategies can mitigate these issues, including using SMTP relay services, setting up DKIM signing for all sending domains, implementing a DMARC policy, using subdomains, and monitoring deliverability through tools like Google Postmaster Tools. For larger organizations, dedicated IP addresses may provide more control. Warming up new sending domains and setting up DMARC reporting are also crucial for maintaining a positive sender reputation and identifying potential unauthorized use.

When dealing with return-path issues in Google Workspace with multiple sending domains, the primary concern revolves around SPF alignment and ensuring legitimate email sending practices. One perspective suggests the default setup is acceptable, while others emphasize the importance of proper SPF configuration. Specifically, the Return-Path (Envelope From) is where bounces are sent, and discrepancies between this and the From domain necessitate careful SPF record management to authorize Google's servers and prevent deliverability problems.

Documentation from various sources outlines key aspects of managing return-path issues when sending from multiple domains in Google Workspace. It highlights the ability to add alternate "From" addresses, emphasizing the need for verification. It also stresses the importance of properly configuring SPF records to include Google's SPF record and utilizing tools like MXToolbox to verify SPF configuration. Furthermore, Google Postmaster Tools is recommended for monitoring sender reputation and identifying deliverability issues, while RFC 5321 clarifies the purpose of the Return-Path header as the destination for bounce messages.