What is the email service that plex is using?

Hi

I got the following notification from the forums that emails were bouncing… however… my ISP has whitelisted the IP addresses for anything @plex.discoursemail.com and no messages are coming thru.

Did you give up sending notifications to me? Is there a different service sending them now? What is the message you are seeing from the plex server side?

We’re sorry, but we’re having trouble reaching you via email. Our last few emails to you have all bounced back as undeliverable.

Can you make sure [your email address](https://forums.plex.tv/my/preferences/email) is valid and working? You may also wish to add our email address to your address book / contact list to improve deliverability.

I removed your email from bounce list. Our forums provider uses their own email service.

Thanks… I got the email notification AND sent the headers from the email to my ISP to make sure they configure their RBL system appropriately.