Migrating to Exchange Online Office 365 using IMAP Connector – Field notes

I’ve been working on migrating customers on-premise e-mail solution to Office 365, so they could benefit from all the goodness that Office 365 offers, we encountered some issues that we couldn’t find in the official documentation. By reading the migration documentation – IMAP Migration Documentation – we thought that we planned every black scenario that could happen, but Murphy’s law happened and we faced some dreadful issues.

In this blog post, I will write about what I encountered during an IMAP migration of a Zimbra on-premise e-mail solution and what you guys should consider if you ever do an IMAP migration of a non-documented e-mail solution.

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