What rules should I add to our allow list to ensure Transistor's emails are delivered to my company?

Have your IT team allow email receiving from these email addresses, IP addresses & domains:

• Sending email: support@transistor.fm and mail@transistor.fm
• IP address: 159.183.152.21
• Domains: em7173.transistor.fm and transistor.fm

Updated on: 16/10/2025