On my server on all mail id’s all mail coming double please give us solution asap.
The One server was migrated today. It’s possible that your email client may see the reindexed emails in such a way, though odd that literally everything including new emails should be doubled. I can assure you that the server is not currently doubling inbound email. You can test in webmail to see if you see the same. If you do, you may have filters performing some odd action.
You may benefit from removing your email from your client software and adding it back. Such a process shouldn’t be necessary, but in the face of unusual behavior I’m not certain that I can think of another option.
I did find emails coming in with multiple deliveries, but that’s because you have forwarders set up to forward inbound email to multiple recipients.