Email Gateway Defense can send outbound mail from various IP addresses. These ranges can also be found in the Barracuda SPF records for each region. For more information, see How to Configure Sender Policy Framework.
The outbound IP range your Email Gateway Defense tenant uses will depend on the region you chose when setting up Email Gateway Defense.
Australia (AU)
3.24.133.128/25
Canada (CA)
15.222.16.128/25
Germany (DE)
- 35.157.190.224/27
- 18.185.115.192/26
- 18.184.203.224/27
United Kingdom (UK)
- 35.176.92.96/27
- 18.133.136.128/26
- 18.133.136.96/27
United States (US)
209.222.82.0/24