Hello, everyone!
Seasons Greetings from Zoho Desk team. You might have read our post about the planned maintenance activities in our Data Centers from 23 Dec 2016 to 30 December 2016. We do not expect any service disruption, except for a few minutes in between, when we start the maintenance and while we resume the services.
Those of you who're using external SMTP server and have whitelisted our IP addresses for sending emails, please add the following server: sender.zoho.com to your current whitelist. You can reach out to your domain administrators to make this change. This is to avoid issues in sending emails during and after our planned maintenance activity.
If you aren't using your own SMTP or haven't whitelisted our IP addresses already, you don't need to worry about this announcement. You're good to go.
Please feel free to write to us, in case you need more details in this regard. Thank you for your support and wishing you a happy and successful 2017!