No mail notification on some email addresses

Hello,

I use your great plugin!

But since today, subscribers receive a new comment no longer mail notification.
All people with a personal [email protected] do receive an e-mail notification.
But the strange thing is that all people with [email protected] or [email protected] not get mail notification anymore. Last week there was still a mail notification in on these addresses.

I have looked in the spam box but there is no mail arrived.

It’s a mystery! I do not get it!

Welcome your help!

Thanks!

Niels

https://www.ads-software.com/plugins/subscribe-to-comments-reloaded/