FTH says my email is invalid - but it's not

Club # 1196053 ConfidentCommunicatorsclub.com

The FTH system is telling us that my email address is invalid or not working - neither of which is true. How do I (or someone else) fix this?  The message my club prez recid is:[color=rgba(0, 0, 0, 1.0)]From: [/color]"FreeToastHost Server" <server@toastmastersclubs.org>[color=rgba(0, 0, 0, 1.0)]Subject: [/color][FreeToastHost] Message Not Delivered: Confident Communicators - Call for Contestants![color=rgba(0, 0, 0, 1.0)]Date: [/color]December 2, 2022 at 11:14:01 AM EST[color=rgba(0, 0, 0, 1.0)]To: [/color]rdurling@comcast.net linda@thewriteconcept.com appears to be an invalid or non-working recipient email address. (No advertised SMTP servers are accepting mail.)

*** Please check the email address to make sure it is not misspelled. ***

You host in a datcenter that allows spammers and the IP was blocked.
I have opened the IP for now.

You email should be working.

Thank you for the quick fix, Brian!