OK. Log says:
Mail::Sendmail v. 0.80 - Thu Apr 25 06:46:15 2024
Date: Thu, 25 Apr 2024 06:46:15 -0400
Server: localhost Port: 25
From: mtoth@queldor.net
Subject: 
To: michael.toth@rcn.com

Result: 250 2.0.0 43PAkF0Q085430 Message accepted for delivery