Exclaimer Cloud Simple Mail Transfer Protocol (SMTP) host list and Internet Protocol (IP) Whitelist – Exclaimer Cloud Knowledge Base

Relevant Products: Exclaimer Cloud - Signatures for Office 365 | Exclaimer Cloud - Signatures for G Suite

Overview

The Exclaimer Cloud service uses a number of Simple Mail Transfer Protocol (SMTP) hosts which help in moving your email across networks to complete the simple actions of sending and receiving mail, between the email sender and receiver.

For your domain, if you add additional include mechanisms to the Sender Policy Framework (SPF) records and this causes them to exceed the 10 Domain Name System (DNS) lookup limit - you can add the IP address (specific to the region where your Exclaimer Cloud subscription is hosted) to the SPF records.

Exclaimer Cloud - Signatures for Microsoft 365:

Region	Australia	Canada	Europe	India	United Kingdom	United States
Region code	AU	CA	EU	IN	UK	US
Host	smtp.au1.exclaimer.net	smtp.ca1.exclaimer.net	smtp.eu1.exclaimer.net	smtp.in1.exclaimer.net	smtp.uk1.exclaimer.net	smtp.us1.exclaimer.net
IP address	104.210.80.79 13.70.157.244	52.233.37.155 52.242.32.10	104.40.229.156 52.169.0.179	52.172.222.27 52.172.38.8	51.140.37.132 51.141.5.228	191.237.4.149 104.209.35.28
SPF record	spf.au.exclaimer.net	spf.ca.exclaimer.net	spf.eu.exclaimer.net	spf.in.exclaimer.net	spf.uk.exclaimer.net	spf.us.exclaimer.net

Exclaimer Cloud - Signatures for G Suite:

Caution: If you are using Exclaimer Cloud - Signatures for G Suite, the relevant IP addresses will need to be used when setting up the SMTP relay as detailed here: How to setup the Exclaimer Cloud Content Compliance rule.

Region	Europe	United States
Region code	EU	US
Host	smtp.gseu.exclaimer.net	smtp.gsus.exclaimer.net
IP Address	20.50.220.144/28 40.127.253.48/28	52.226.94.192/28 13.64.55.16/28
SPF record	spf.eu.exclaimer.net	spf.us.exclaimer.net