Hi,
We have a customer/org that is not receiving ticket update emails because they are blocking all traffic (strict security). They are asking for what IP address to whitelist to allow these @zendesk.com emails to come through. Where can I find this info?
Appreciate you creating this post and welcome to the Zendesk Community!
I would recommend taking a look at this article and sharing it with your customer: Configuring your firewall for use with Zendesk
Let me know if you have any other questions for me :)