There was a temporary problem delivering your message to [email address removed per the Verizon Terms of Service]. Gmail will retry for 45 more hours. You'll be notified if the delivery fails permanently.
We always want to ensure there is a resolution for you, shmeul3641. Let's take a closer look into what's going on. Just to confirm, are you sending individual messages or messages to more than one party? When did this issue originally begin?