Allowing Desk.com Servers Access to Your Mail Servers (IP Whitelist)

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Overview

Please Note: If you're using the desk-mail account we provide, then you do not need to Whitelist these IP addresses.

The Desk.com system uses your existing email accounts to send and receive emails. If you are using your own mail servers, your network team may need to make firewall changes to allow Desk.com to access the mail servers. If you aren't seeing any issues with sending and receiving email into your Desk Account, you may not need to Whitelist these IPs.

To ensure performance and availability, Desk.com load balances the application. All of the following IP addresses require access to your mail server, regardless of the date that they were added. For ease of use for existing customers, the IPs will be categorized by the date that they were added to the pool:
These IPs were in the list prior to 5/14/2013:

50.18.53.247
50.18.54.2
50.18.54.8
50.18.54.42
50.18.54.59
50.18.54.84
50.18.59.140
50.18.59.141
50.18.59.142
50.18.59.144
50.18.59.150
50.18.104.50
50.18.105.141
50.18.113.127
50.18.127.251
50.18.156.77
50.18.169.28
50.18.178.12
50.18.178.13
50.18.178.18
50.18.178.24
50.18.251.194
54.241.15.215
54.241.19.172
54.241.19.196
54.241.27.106
184.72.46.252
184.72.46.253
184.72.46.254
184.72.46.255
184.169.164.172
184.169.164.176
184.169.164.179
184.169.164.181
204.236.135.230

The following IPs were added to the pool on 5/14/2013:

54.215.107.30
54.241.214.220
204.236.156.17
50.18.25.136
50.18.78.40
54.241.103.241


The following IPs were added to the pool on 11/12/2013:
54.215.9.40


The following IPs were added to the pool on 07/31/2014:

50.18.90.23
The following IPs will be added to the pool on 3/1/2015:
54.241.37.0/24 (entire range 0-255)
54.241.38.0/24 (entire range 0-255)
The following IPs will be added to the pool on 4/28/2016:
54.241.38.166

If you are using Desk.com email and would like to know what IP addresses our service uses, please reference this article. These IP's are not required to be whitelisted, but there may be some instances where your IT staff need to know what they are.

If you are experimenting with Desk.com and not ready to make these network changes, we suggest you set up a Gmail test account and follow Google's instructions. Certain security devices or applications may require the subnet mask, if needed it is 255.255.255.255

If you want to be notified when Desk.com changes this list of IPs, please sign up for the Change Detection service listed below:

1 Additional server address maybe added or addresses may change as Desk.com grows.

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