Mail sync using imapsync and outlook failed

Hello! I want to share a bad experience. Yesterday I started migrating all (about 10 pieces) mailboxes from MDaemon to NS8 with the mail module. Synchronization was performed via Expost - Import to Outlook because on the old MDaemon server when connecting several synchronizations (imapsync) the disk load was 100% and the MDaemon server could not cope. At that time, the NS8 admin panel was unavailable https://IP_NS8_mail/cluster-admin/#/domains/domain.local?view=users

Just some ideas, you could try to

  • configure imapsync to not autosync via cron and run the jobs sequentially one after the other to not overload the servers.
  • use Thunderbird instead of Outlook to exclude “Outlook issues”

EDIT:

I moved it to a new support topic.

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DoS attack inside the network. :grin:

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