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If you maintain a whitelist that includes the IP addresses of Campaign Monitor’s delivery servers, this is just a quick heads-up regarding the new sending IP’s we’ve added to our pool recently. We’ve also retired a few addresses, too.

We’d like to stress that this information only applies to customers with a strict email setup that either requires explicit permission from incoming email, or employs strict message filtering. New IP addresses are warmed up over time and our technical team ensures that they provide our usual high delivery rates before introducing them to our customers.

We currently deliver campaigns from the following IP addresses:

  • 206.72.127.0/24
  • 184.106.87.160/29 (new)
  • 184.106.87.168/29 (new)
  • 184.106.86.128/28 (new)

Also note that we’ve also recently retired the following IPs:

  • 174.143.75.130
  • 174.143.75.131
  • 174.143.75.132
  • 174.143.75.133
  • 174.143.75.134
  • 174.143.75.135

As keeping your whitelists updated is important to ensuring that emails continue to get delivered to your (or your clients’) domains, we’ve started a mailing list to keep you updated whenever we make changes.

Receive a notification via email when our sending IPs change

To receive an update via email whenever the IP addresses above change, subscribe to our list. You will only receive email regarding IP changes and can unsubscribe at any time.

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Many thanks for your patience as we’ve tinkered in the background with our servers. A huge thank you also to our photogenic sysadmins Scott and Cam, who work flat-chat to keep our campaigns sending (and arriving in inboxes worldwide). Happy whitelisting to all of ye!

This blog provides general information and discussion about email marketing and related subjects. The content provided in this blog ("Content”), should not be construed as and is not intended to constitute financial, legal or tax advice. You should seek the advice of professionals prior to acting upon any information contained in the Content. All Content is provided strictly “as is” and we make no warranty or representation of any kind regarding the Content.
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