Depending on the nature of your mail service provider, your IT team could ask you for Commusoft’s IP address to whitelist in order to set up SMTP.
Commusoft is unable to share public IP addresses with clients as these IP addresses are subject to change. The Commusoft software is constantly evolving, creating new servers on a regular basis to meet demand and there is no effective way to keep you up to date with these changes.
You are always free, however, to whitelist the public Commusoft domain which is: mail.commusoft.co.uk, although if you have persistent issues, we would advise you to contact your mail service provider directly to see if a more permanent solution can be found.