Case Study: Email and DNS
Migrated corporate email without losing emails
Needed to change the email platform, preserve employee mailboxes and folders and prevent a prolonged interruption in sending and receiving messages.
DNS changes quickly, email does not
During the switch, emails could arrive at both old and new platforms, so changing MX records alone was insufficient.
Mailbox preparation
Users, aliases, groups, and quotas were set up on the new platform before switching.
Dual synchronization
Migrated the main history, then performed a final synchronization of new messages.
DNS and deliverability
Updated MX, SPF, DKIM and DMARC records, verified sending and receiving across different providers.
Description is anonymized: technical details and customer data are not disclosed.
Result
- Employees preserved their work mailboxes and email history.
- The transition was completed with a controlled switch window.
- Domain records and sender impersonation protection are configured consistently.
- After migration, clients, mobile devices, and deliverability were verified.
Are you planning to change your email platform?
We will prepare mailboxes, synchronization, and DNS to ensure that emails are not lost.