Direct Email Relaying

I am part of our City's volunteer organizations that has a distribution list. When I send an email from my Yahoo account to the distribution list, I do not get a copy myself. The IT person at our City wrote:''

"Verizon Media which is the parent company for, evidentially has email policy which blocks emails from being sent and received over the Internet from the same email address. (This is a form of Direct Email Relaying and it is usually blocked by most Internet providers)"

Anyone else having this issue? Anyone know whether this is an accurate response? I belong to several Google groups and have sent messages over the years to the groups and always received a copy back myself

System Configuration: Windows / Chrome 86.0.4240.193