IMAP Mail Migration
Hello Microsoft Community, We are currently performing a mailbox migration from Google Workspace (Gmail) to Microsoft 365 Exchange Online using the IMAP migration method. The customer's environment is configured for split routing/coexistence, where both Google Workspace and Microsoft 365 are actively being used during the migration process. Mail flow is functioning as expected; however, we are experiencing extremely slow migration performance. For example, a mailbox containing approximately 10 GB of data is taking nearly two weeks to migrate, which is significantly impacting the overall project timeline. We would appreciate guidance on the following: Is this migration speed expected when using the IMAP migration method from Google Workspace to Exchange Online? Does Exchange Online enforce any throttling limits that can affect IMAP migration throughput? Can split routing or coexistence between Google Workspace and Microsoft 365 impact IMAP migration performance? Is there a recommended number of concurrent mailbox migrations or migration batch size for optimal performance? Are there any Google Workspace-side limitations, API restrictions, or throttling settings that should be reviewed? What Microsoft-recommended configurations or best practices can help improve IMAP migration speed? If higher migration throughput is required, does Microsoft recommend an alternative migration approach instead of IMAP? If split routing/coexistence must remain active throughout the migration project, what is the recommended Microsoft-supported migration method? We are trying to identify whether the bottleneck is on the Exchange Online side, Google Workspace side, or related to the coexistence configuration. Any troubleshooting guidance, performance recommendations, or Microsoft documentation references would be greatly appreciated.Learn what's next for Exchange and Office 365 at Ignite - Full session list now available
This morning we released the complete list of sessions offered at Microsoft Ignite, including the full list of Exchange sessions. Ignite is the premier event for the Exchange community, bringing together the people who build Exchange and those who work with it every day. If you are one of the many Microsoft Exchange Conference (MEC) alumni, Ignite is the evolution of MEC. Be there as we talk about what’s coming next in Exchange, announce new Office 365 innovations and share our overall technology vision and strategy. Deep technical content At Ignite, we’ll have over 65 breakout sessions dedicated to Exchange on-premises and online, 9 hands-on-labs (HOLs) and 2 pre-day offerings for Exchange IT Pros – many of these offerings presented for the first time at Ignite. You will hear from Exchange engineering, deployment and support teams, as well as independent MVP experts. Ignite offers more than just Exchange content, providing easy access to a broad set of content across Microsoft technologies. You will find over 550 sessions ready for selection at Ignite. So go broad and deep with leading experts from Microsoft and the community on topics ranging from product overview, best practices, how-to, deep-dives, vision and roadmap – tailored by role, level, and specific interests. Here as few sessions you will find on the agenda for Ignite. Title Speaker Level Exchange Server Preferred Architecture Ross Smith IV 300 Under the Hood with DAGs Tim McMichael 400 Exchange Hybrid: Make Office 365 Work for You Michael Van Horenbeeck and Timothy Heeney 300 Experts Unplugged: Exchange Top Issues Exchange and Office 365 Support Teams 300 MVPs Unplugged: The Journey to Microsoft Exchange Online Exchange MVPs 300 View all sessions featuring Exchange product technology here. Unrivaled community & networking opportunities If you’ve been to MEC in the past, you know the real magic happens with the connections you make on site – impromptu geek-out whiteboard sessions, ad-hoc syncs and afterhours at the big and small parties. We are building a complete Ignite experience to deliver opportunities to network at Ignite as Exchange MVP Jason Sherry shared with us early in the Ignite planning process. "The key thing for me is the networking and open dialog that can easily be had with anyone there. Easy access to my peers and product group. We powwow and can then walk to sessions together. Interacting with your peers and socializing is the biggest benefit." – Jason Sherry, Exchange MVP & MEC Alumni, @JasonSherry We’re hosting six large theaters in the spacious expo hall at the event to serve as community zones – these provide a platform for community leaders to share their knowledge and experience with attendees as well as comfortable meeting places for the spontaneous conversations that crop up. The content in these theaters is 100% community-driven; you can expect community-run panel discussions, short fire-starter sessions in which you share an idea with the community and get immediate feedback and birds of a feather session in which people with similar interests gather for discussion, and maybe some of that ‘controlled chaos with clarity’ this community is known for. Mealtimes and after hours provide a whole new slew of opportunities to network and make connections, from scheduled events including the Welcome Reception Monday night and Attendee Party Thursday night to more informal gatherings including meal-time mashups with seating by topic or geography so every meal at the conference becomes a chance to meet someone with similar interests. Join in Register today and join us at Ignite!
